The utility model relates to the field of safety testing devices, and in particular to a safety testing device for fire fighting equipment, comprising a base, a rotating bracket, a rotating handle, a slide rail, a rotating motor, a motor bracket, an elastic bracket, a driving wheel, a transmission belt and a sliding support bracket; The top of the base is connected to the rotating bracket; A support bracket is provided on the top of the base, and the top of the support bracket is connected to the rotating handle; The output end of the rotating motor is connected to the driving wheel for transmission; The driving wheel is connected to the motor bracket for rotation; The utility model can judge whether the current fire fighting equipment is safe and qualified by detecting whether the side shape of the fire extinguisher is standard, so as to ensure that the fire fighting equipment after testing can be used normally and safely. The device can detect in real time whether the side of the fire extinguisher at the current position is in a circular shape by means of rotating fixation and side sliding detection, so as to screen out the deformed fire fighting equipment, thereby improving the detection efficiency of the device.