The title of the utility model is a rapid detection device for a spring of a pressure alarm sensor, and the utility model belongs to the field of rapid detection technologies for compression springs. The rapid detection device for a spring of a pressure alarm sensor mainly solves the problems that a present detection device is slow in detection, low in precision and low in detection efficiency. The rapid detection device for the spring of the pressure alarm sensor is characterized by including an electric control portion and a mechanical clamp portion; the electric control portion is composed of a PLC, a motion module, a weighing module, a motor driver, a touch screen, a power supply and a control box; and the mechanical clamp portion includes a pedestal, a ball screw, a linear guide rail, a supporting and fixing plate, a motor, a pressing plate and a weighing sensor. The motor, the ball screw and the linear guide rail are mounted on the supporting and fixing plate, the pressing plate is disposed in the linear guide rail, and the sensor is fixed on the pedestal below the pressing plate. The rapid detection device for the spring of the pressure alarm sensor is convenient to set parameters, fast in detection speed (within 5 seconds) and high in precision (0.01 Newton, 0.01 millimeter); and the rapid detection device is mainly used for detecting a miniature compression spring with a compression force being within 50 Newton and a compression amount being within 150 millimeters.