The invention discloses an electric power accessory manufacturing batch assembling machine and a manufacturing assembling method. The batch assembling machine comprises a working table top, a protective shell, an assembling mechanism and a driving motor, wherein the protective shell is installed at the upper end of the working table top through a fixing frame, the assembling mechanism is arrangedin the protective shell, the driving motor is mounted at the bottom of the working table through a motor fixing frame and connected with the assembling mechanism, a rectangular plate is arranged on the inner wall of the protective shell, a supporting plate is welded to the top of the protective shell, a connecting rod is welded to one end of the protective shell, a triangular plate is connected tothe bottom of the connecting rod, a driven shaft and a driving shaft are installed on the working table through shaft seats, a round hole is formed in the joint of the interior of the working table and the driving shaft, the driving shaft penetrates through the round hole to be connected with an output shaft of the driving motor, a driven synchronizing wheel is installed on the outer wall of thedriven shaft, and a driving synchronizing wheel is installed on the outer wall of the driving shaft. According to the batch assembling machine, automatic locking of a bolt and a nut and automatic separation of parallel hanging plates can be rapidly completed.