Improving its antivibration performance is a difficult techmical problem which must be solved in the study and application of vortex street flowmeter. The author discussed the general antivibration measures of the piezoelectric stress-type vortex street flowmeter,presented the method which the structure of dual piezoelectric wafers is introduced into sensor,made a theoretical analysis and study of the antivibration principle for this method and gave the test results.