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In the development of airborne (aircraft loading) electrical equipment, it is necessary to test its power supply voltage withstanding index, which meets the requirements of GJB181-86, i.e. generating 80V/8V/50ms/5th pulse voltage or GJB181A-2003, i.e. generating 50V/18V/50ms/5th pulse voltage. According to the key signal to 8051f330 to control the closure and disconnection of two AC/DC output relays to generate the required surge voltage, 8051f330 at the same time according to the voltage sampled to the input and output ports of the surge generator to determine the working status of the surge generator and display with the indicator lamp, if the surge generator works abnormally, the surge generator Automatic identification and shutdown of input and output, protection of surge generator and test of airborne electrical equipment. This paper also simulates the circuit and control program of the surge generator by Proteus simulation software. Finally, the prototype of the surge generator is powered and debugged. The output voltage waveform captured by the oscilloscope also verifies the feasibility of the scheme. It also verifies that the generated surge voltage can satisfy both GJB181-86 and GJB181A. - 2003 standard.