FOR IMMEDIATE RELEASE
                                                                    May 26, 2006
                                                           ADVANTEST CORPORATION
                                            (Toshio Maruyama, President and CEO)
                                    (Stock Code Number: 6857, TSE first section)
                                                      (Ticker Symbol: ATE, NYSE)

CONTACT:
Yuri Morita
(Managing Executive Officer and
Senior Vice President, Corporate Affairs Group)
Phone: +81-(0)3-3214-7500

  Advantest Adopts Stock Option Plan (in the Form of Stock Acquisition Rights)

Tokyo - May 26, 2006 - Advantest Corporation (the "Company") resolved at a
meeting of its Board of Directors today, pursuant to Articles 236, 238 and 239
of the Company Law of Japan to submit to its shareholders, a proposal to
authorize the issuance of stock acquisition rights described hereunder in
connection with stock option grants. The proposal will be made at its 64th
ordinary general meeting of shareholders (the "Shareholders' Meeting") to be
held on June 27, 2006.

1.   Reason for the issuance of stock acquisition rights on especially favorable
     terms

     The Company will issue stock acquisition rights as stock options on
     especially favorable terms to executive officers and employees of the
     Company and directors, corporate auditors and employees of its domestic and
     overseas subsidiaries to improve performance and morale of executive
     officers and employees of the Company and directors and employees of its
     domestic and overseas subsidiaries, and corporate auditor's awareness of
     proper auditing at the Company's domestic and foreign subsidiaries. In this
     manner, the Company aims to promote a management style conscious of
     increasing shareholder value and to attract and retain outstanding
     personnel.

2.   Details of the stock acquisition rights

(1)  Persons to whom the stock acquisition rights will be allocated

     Executive officers and employees of the Company and directors, corporate
     auditors and employees of its domestic and overseas subsidiaries of the
     Company.

(2)  Class and number of shares to be issued upon exercise of the stock
     acquisition rights

     Not exceeding 700,000 shares of common stock of the Company.

     The number of shares to be issued upon exercise of each stock acquisition
     right shall be 100 shares, provided that if the subscription price per
     share has been adjusted in accordance with sub-paragraph (5) below, the
     number of such shares shall be adjusted according to the following formula.
     This adjustment has been made only with respect to stock acquisition rights
     that have not yet been exercised as of the time of adjustment. Any
     fractional share that arises as a result of an adjustment will be rounded
     down to the nearest whole number of shares.

          Number of shares to be issued or           Total subscription price
        delivered upon exercise of each stock    =  ----------------------------
                  acquisition right                 Subscription price per share

     When the number of shares to be issued or delivered upon exercise of each
     stock acquisition right has been adjusted, the total number of shares to be
     issued or delivered upon exercise of the stock acquisition rights shall be
     adjusted to the number obtained by multiplying (i) the number of shares to
     be issued or delivered upon exercise of each stock acquisition right after
     adjustment by (ii) the number of the stock acquisition rights that have not
     yet been exercised as of such adjustment, then adding the number of shares
     that have been issued or delivered upon exercise of the stock acquisition
     rights. After the adjustment, the total number of shares to be issued or
     delivered upon exercise of the stock acquisition rights may exceed 700,000
     shares.

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(3)  Total number of the stock acquisition rights to be issued

     Not exceeding 7,000.

(4)  Issue price of the stock acquisition rights

     No consideration.

(5)  Subscription price to be paid upon exercise of each stock acquisition right

     The subscription price to be paid upon exercise of each stock acquisition
     right shall be determined by multiplying (i) the subscription price per
     share as determined in the following paragraph, by (ii) the number of
     shares to be issued or delivered upon exercise of each stock acquisition
     right as specified in sub-paragraph (2) above (initially, 100 shares).

     The subscription price per share shall be 1.05 times the average closing
     price, rounded up to the nearest yen, of the common stock of the Company in
     regular trading on the Tokyo Stock Exchange on each day of the month
     preceding to the month in which any stock acquisition rights are allocated
     (excluding any such day on which there was no trade); provided, however,
     that if such amount is less than the closing price of the common stock of
     the Company on such day of allocation (or, if there was no trade on such
     day of allocation, the closing price on the immediately preceding day on
     which there was any trade), the subscription price per share shall be equal
     to the closing price on such day of allocation. The Company may determine
     the subscription price per share to be the same as that for the first stock
     acquisition rights issued based upon this Shareholders' Meeting (if the
     subscription price per share for the first stock acquisition right is
     adjusted by the method described below, such adjusted subscription price
     per share) for any subsequent stock acquisition rights issued.

     If, subsequent to the issuance of the stock acquisition rights, the Company
     splits or consolidates its common stock, or issues new shares or disposes
     of its treasury shares below market price (subject to certain other
     exceptions including the issuance or delivery of shares upon exercise of
     stock acquisition rights), the subscription price per share shall be
     adjusted according to the formula set forth below, rounded up to the
     nearest yen. Furthermore, the subscription price per share may, to the
     extent necessary and reasonable, be adjusted in a way deemed appropriate by
     the Company, in the case of merger or split of the Company, stock-for-stock
     exchange or certain other events. The Company may determine the
     subscription price per share for each stock acquisition right issued
     pursuant to the resolution of this Shareholders' Meeting after such
     adjustment to be the same as the adjusted subscription price per share.

     (a)  Formula for adjustment in the case of share split or consolidation



                                                                     
         Subscription price per share   =     Subscription price per                           1
               after adjustment               share before adjustment     x    ----------------------------------
                                                                                  Ratio of split / consolidation


     (b)  Formula for adjustment in the case of issue of new shares or
          disposition of treasury stock below market price

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                                                                              Number of new            Subscription
                                                      Outstanding             shares to be     X     price per share
          Subscription         Subscription            number of    +            issued                to be issued
            price per            price per       x       shares             ----------------------------------------
           share after     =    share before                                          Market price per share
            adjustment           adjustment           --------------------------------------------------------------
                                                        Outstanding number of       +       Number of new shares
                                                             shares                             to be issued


     In the above formula, "outstanding number of shares" shall mean the total
     number of outstanding shares of the Company after deduction of shares held
     by the Company as treasury stock. In the case of disposition of treasury
     stock, "number of new shares to be issued" in the above formula shall be
     read as "number of treasury shares to be disposed of".

(6)  Exercise period of the stock acquisition rights

     Between April 1, 2007 and March 31, 2011 (4 years).

(7)  Conditions for exercise of the stock acquisition rights

     (a)  A person to whom the stock acquisition rights has been allocated must
          be a director, corporate auditor, executive officer or employee of the
          Company or its domestic or overseas subsidiary at the time of
          exercise, expect where there are any reasons the Company deems
          justifiable.

     (b)  The stock acquisition rights may not be inherited.

     (c)  No stock acquisition right may be exercised in part.

     (d)  Other terms and conditions will be determined at a meeting of the
          Board of Directors to be held subsequent to the Shareholders' Meeting.

(8)  The Company's acquisition of the stock acquisition rights

     The Company shall automatically acquire the stock acquisition rights, for
     no consideration, if:

     (a)  the general meeting of shareholders approves (if approval by the
          shareholders' meeting is not legally required, then the Board of
          Directors may approve) (i) any merger agreement pursuant to which the
          Company shall dissolve, (ii) any agreement or a plan pursuant to which
          the Company shall split all or part of its business or (iii) any
          stock-for-stock exchange agreement or stock-transfer plan pursuant to
          which the Company shall become a wholly-owned subsidiary of another
          company;

     (b)  a person to whom the stock acquisition rights has been allocated does
          not hold the position of a director, corporate auditor, executive
          officer, employee or any other similar position of the Company or its
          domestic and overseas subsidiaries, expect where there are any reasons
          the Company deems justifiable;

     (c)  a person to whom the stock acquisition rights has been allocated dies;

     (d)  a person to whom the stock acquisition rights has been allocated
          waives all or part of his stock acquisition rights to the Company;

     (e)  a person to whom the stock acquisition rights has been allocated
          becomes a director, corporate auditor, executive officer or employee
          of a company that competes with the Company, except where such change
          of position has been approved by the Company;

     (f)  a person to whom the stock acquisition rights has been allocated is in
          violation of laws and regulations, internal rules or other regulations
          of the Company, except where there are any reasons the Company deems
          justifiable; and

     (g)  other events as determined by resolution at a meeting of the Board of
          Directors to be held subsequent to the Shareholders' Meeting occur.

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(9)  Matters concerning the amount of capital and the additional paid-in capital
     increased by the issuance of shares upon exercise of the stock acquisition
     rights

     (a)  The amount of capital increased by the issue of the shares upon
          exercise of the stock acquisition rights shall be the amount equal to
          one-half of the maximum limit of capital increase, as calculated in
          accordance with Article 40, Paragraph 1 of the Company Accounting
          Regulation (kaisha keisan kisoku), and any fraction less than one (1)
          yen arising as a result of such calculation shall be rounded up to the
          nearest one (1) yen.

     (b)  The amount of additional paid-in capital increased by the issue of the
          shares upon exercise of the stock acquisition rights shall be the
          amount obtained by subtracting the capital to be increased, as
          provided in the sub-paragraph (a) above, from the maximum limit of
          capital increase, as also provided in the sub-paragraph (a) above.


(10) Restriction on the transfer of the stock acquisition rights

     Approval by the Board of Directors is required upon a transfer of the stock
     acquisition rights, except where the Company is the transferee with respect
     to such transfer.

(11) Other details in respect of the stock acquisition rights will be determined
     by resolution at a meeting of the Board of Directors to be held subsequent
     to the Shareholders' Meeting.

     (Note) The above terms are subject to approval at the Shareholders' Meeting
            of the proposal entitled "Issuance of stock acquisition rights as
            stock options".

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