A surgical electric appliance insulation detection device specially designed for hospital use is composed of an insulation detector, a positive pole connection line, a negative pole connection line, a negative pole base, and a water tank. By using a novel detection method, the surgical electric appliance insulation detection device can detect the insulation performance of different surgical electric appliances quickly. The method of insulation resistance detection is changed from the measurement of insulation resistance of the center metal of a wire to each point of the outer insulation layer of the wire to the measurement of insulation resistance between two wires or the measurement of insulation resistance of a wire to a ring. Detection includes hardware detection and software detection.