FOR IMMEDIATE RELEASE


                                                                October 27, 2006
                                                           ADVANTEST CORPORATION
                                (Toshio Maruyama, Representative Board Director,
                                                              President and CEO)
                                    (Stock Code Number: 6857, TSE first section)
                                                      (Ticker Symbol: ATE, NYSE)


CONTACT:
Hiroshi Nakamura
(Executive Officer, Vice President of the Corporate Affairs Group)
Phone: +81-(0)3-3214-7500


       Revision of Earnings Forecast for the Fiscal Year Ending March 2007

In light of recent changes in business performance, we hereby revise the FY 2006
Interim Non-Consolidated earnings forecast and the Non-Consolidated earnings
forecast for the fiscal year ending March 2007, which were released on April 26,
2006, as follows:


[Non-Consolidated Earnings] (Parent Company only)

1.   FY 2006 Interim (April 1, 2006 to September 30, 2006)

                                                            (in millions of yen)
- --------------------------------------------------------------------------------
                                 Net Sales      Ordinary Income      Net Income
- --------------------------------------------------------------------------------
Previous forecast (A)              113,000               28,000          18,500
(As of April 26, 2006)
- --------------------------------------------------------------------------------
Revised forecast (B)                99,562               24,293          16,707
- --------------------------------------------------------------------------------
Difference (B-A)                   (13,438)              (3,707)         (1,793)
- --------------------------------------------------------------------------------
Percentage change                   (11.9%)              (13.2%)          (9.7%)
- --------------------------------------------------------------------------------
FY 2005 Interim results            101,484               24,589          16,524
- --------------------------------------------------------------------------------

2.   FY 2006 (April 1, 2006 to March 31, 2007)

                                                            (in millions of yen)
- --------------------------------------------------------------------------------
                                 Net Sales      Ordinary Income      Net Income
- --------------------------------------------------------------------------------
Previous forecast (A)              230,000               56,000          36,000
(As of April 26, 2006)
- --------------------------------------------------------------------------------
Revised forecast (B)               215,000               49,000          33,000
- --------------------------------------------------------------------------------
Difference (B-A)                   (15,000)              (7,000)         (3,000)
- --------------------------------------------------------------------------------
Percentage change                    (6.5%)              (12.5%)          (8.3%)
- --------------------------------------------------------------------------------
FY 2005 results                    217,688               53,878          35,273
- --------------------------------------------------------------------------------


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3. Reasons for the above Revisions



- --------------------------------------------------------------------------------
At the interim fiscal period of FY 2006, sales of test systems for non-memory
semiconductors and front-end test systems for DRAM semiconductors did not
achieve our previous forecasts, and accordingly, sales and income for this
interim fiscal period fell below our previous forecasts. Our forecast for this
entire fiscal year also is expected to fall below our previous forecasts because
such decreases from this interim fiscal period cannot be recovered within FY
2006. We therefore revise the non-consolidated earnings forecast as above.
- --------------------------------------------------------------------------------


* Cautionary Statement with Respect to Forward-Looking Statements

This document contains "forward-looking statements" that are based on
Advantest's current expectations, estimates and projections. These
forward-looking statements are subject to known and unknown risks, uncertainties
and other factors that may cause Advantest's actual results, levels of activity,
performance or achievements to be materially different from those expressed or
implied by such forward-looking statements. These factors include : (i) changes
in demand for the products and services produced and offered by Advantest's
customers, including semiconductors, communications services and electronic
goods; (ii) circumstances relating to Advantest's investment in technology,
including its ability to timely develop products that meet the changing needs of
semiconductor manufacturers and communications network equipment and components
makers and service providers; (iii) significant changes in the competitive
environment in the major markets where Advantest purchases materials, components
and supplies for the production of its products or where its products are
produced, distributed or sold; and (iv) changes in economic conditions, currency
exchange rates or political stability in the major markets where Advantest
procures materials, components and supplies for the production of its principal
products or where its products are produced, distributed or sold. A discussion
of these and other factors which may affect Advantest's actual results, levels
of activity, performance or achievements is contained in the "Operating and
Financial Review and Prospects", "Key Information - Risk Factors" and
"Information on the Company" sections and elsewhere in Advantest's annual report
on Form 20-F, which is on file with the Unites States Securities and Exchange
Commission.



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