1

                                                                 Exhibit 23.1

                         Consent of Independent Auditors

We consent to the reference to our firm under the caption "Experts" in the
Registration Statement (Form S-3) and the related Prospectus of PLC Systems Inc.
for the registration of 821,190 shares of its common stock and to the
incorporation by reference therein of our report dated February 20, 1998, with
respect to the consolidated financial statements and schedules of PLC Systems
Inc. included in its Annual Report (Form 10-K) for the year ended December 31,
1997, filed with the Securities and Exchange Commission.


                                                    Ernst & Young LLP

Boston, Massachusetts
May 21, 1998