The invention discloses and provides a multi-angle plane wave coherent color Doppler imaging method which is high in imaging frame frequency, high in imaging efficiency and good in imaging effect and which can generate a more precise and reliable color blood flow image by combining. As all array element sets on an ultrasonic transducer are excited at the same time to generate ultrasonic plane waves instead of traditional point-by-point transmitted ultrasonic waves, whole imaging time is effectively shortened, imaging errors due to time difference overlap are also effectively reduced and imaging efficiency is improved; multiple plane waves are propagated to an imaging area by means of delayed deflection, a precise real-time composite image is acquired by coherence combination of various echo signals, the image can be subjected to non-blood-flow signal removal and calculation to generate a precise reliable color blood flow image. The multi-angle plane wave coherent color Doppler imaging method is applicable to the field of ultrasonic imaging.