The invention discloses a machining and feeding mechanism of a suspension frame assembly of an electric vehicle. The mechanism includes a pick-up rotating disk, a plurality of pick-up operation support arms are arranged on the pick-up rotating disk, and two V-shaped pick-up connection rods are arranged on each pick-up operation support arm; a plurality of support arm mounting and adjusting grooves are formed in the pick-up rotating disk, and each support arm mounting and adjusting groove is internally provided with the corresponding pick-up operation support arm; the axis of a pick-up operation surface of the pick-up rotating disk is coaxially provided with a rotary fixation adjustment shaft, and the rotary fixation adjustment shaft is connected with each pick-up operation support arm through two mutually parallel fixation adjustment connection rods; The mechanism further includes an S-shaped feeding chute arranged between the two corresponding V-shaped pick-up connection rods on each pick-up operation support arm. The machining and feeding mechanism of the suspension frame assembly of the electric vehicle can effectively catch the suspension frame assembly of the electric vehicle and carry out feeding operation, and the feeding height of a stamping feeding mechanism is steadily adjusted.