The invention discloses a detection device of monitoring equipment of a switching station. The detection device comprises a connection device and a control device, and is characterized in that the connection device comprises a metal probe and a circuit board, the control device and the metal probe are arranged on the circuit board, the metal probe is connected with an interface connector assembly through a wire on the circuit board, and the interface connector assembly is connected with the control device through a stranded conductor; the control device comprises a CPU and buttons, fixing holes are formed in the edge of the circuit board, inverse T-shaped magnets are arranged in the fixing holes, the metal probe is of an elastic telescopic structure, and the elasticity distance can be 7 mm. The structure is simple, output signals of sensors of multiple kinds of monitoring equipment can be formed, detection of functions of the multiple kinds of monitoring equipment can be achieved, connection of actual solid sensors is not needed, detection accuracy is verified through an alarming device of the monitoring equipment, and the quality of the detection device is guaranteed.