The invention discloses a control system for the output of springs. The control system comprises a driving gear, a spring energy storage device and a control device, wherein the spring energy storage device is provided with a spring box which is connected with the driving gear and is used for storing energy; the control device comprises an incomplete gear, a pin gear, a piston mechanism and a control ratchet wheel mechanism, wherein the incomplete gear is connected with the spring energy storage device provided with the spring box; the pin gear is meshed with the incomplete gear, and a protuberant pin is arranged on the pin gear; the control ratchet wheel mechanism comprises a control ratchet wheel and a control ratchet which is matched with the control ratchet wheel, the ratchet wheel is connected with the spring energy storage device, a clamping groove is formed in the upper end part of the control ratchet, and the other end of an extension rod is matched with the clamping groove so as to control the rotation of the control ratchet wheel. According to the control system for the output of the springs, disclosed by the invention, the output quantity of mechanical energy can be controlled, so that the output mechanical energy is ordered and stable; when the mechanical energy acts on a piezoelectric piece, the output of the mechanical energy is in a stable frequency.