The invention belongs to the field of somatosensory interaction, in particular to a method for recognizing and evaluating a pedal motion in a virtual assembly operation. The method comprises the following steps: step 1, constructing a footstep scene; 2, recognizing that foot movement; 3, evaluating that pedal movement. The invention utilizes Kinect V2 equipment to collect human skeleton data for reverse obtaining of the center of the foot and the ankle from the Kinect V2 coordinates, the pedal movement is judged according to the foot speed, the angle between the ankle-to-foot vector and the XOY plane and the distance between the foot and the pedal center point, and the angle between the knee-to-ankle vector and the knee-to-hip vector is evaluated according to the ankle region. The above method fills in the blank of the existing market.