Active vibration-resistant techniques in interferometer are applied to eliminate the effects of environmental disturb, the mechano-electronic feedback method is one of the low-cost way to fulfill these techniques. The detection of vibrational signal is the key part of this method, in this case, a single photodiode is used to detect optical phase of the interference fields in order to obtain the vibrational signal. The optoelectronic signal concerning with the vibration is digitalized and analyzed by DSP, then a feedback voltage is produced to PZT phase shifter which can compensate the change of optical path difference due to vibration. The principles of each part of this vibration-resistant system are described including the circuit design. Experimental results indicate that this method is an effective way to control the vibration with amplitude-frequency product less than 100 wave·Hz