The invention discloses a measuring method of active and passive combined phase shifting interference wave surface, which comprises the following steps: step 1: introducing passive phase shifting quantity and active phase shifting quantity caused by environmental interference into any point in a detected caliber; step 2: finding out maximum value and minimal value from light intensity-time curve,and calculating background item and modulation item; step 3: calculating the point phase position in interference pattern of the i frame; step 4: obtaining the corresponding phase position information of the point in different interference patterns; and step 5: overlying phase position information patterns of each frame to calculate the average to obtain measuring results of phase position distribution of the detected wave surface. The invention has simple measuring method, low requirements on environment, does not need special vibration attenuation or isolating air current measurement, has active and passive combining property, high measuring efficiency, effectively eliminates the influence of environmental interference and realizes high-precision measurement of the wave surface.