Facial insulation measuring device considering influence of foreign matters

The utility model relates to the technical field of electrical insulation detection, in particular to a surface insulation measuring device considering the influence of foreign matters, which comprises a closed laboratory in a negative pressure state, a particle adding module, a voltage detection module, a test sample and a heating module, the closed laboratory is provided with a particle inlet channel and a gas channel; the particle adding module comprises an outer shell, a middle shell and an inner push rod which are sequentially connected in a sliding mode, and a particle groove is formed in the middle shell; the voltage detection module comprises a high-voltage guide rod, a grounding guide rod, a high-voltage electrode and a low-voltage electrode; a test sample is clamped between the high-voltage electrode and the low-voltage electrode; the heating module is arranged in the closed laboratory; the device is used for solving the problem that particles cannot be flexibly added and the particle concentration