An automatic detection device for pyrotechnics, the invention relates to a detection device for resistance and insulation state of pyrotechnics. In order to solve the problem of a large amount of manual point-by-point detection tasks. for detection. It includes single-chip microcomputer, A / D conversion circuit, signal conditioning circuit, channel switching circuit, drive circuit, constant current source, display circuit and multi-channel signal gating circuit. The circuit is connected to each signal output end of the multi-channel signal gating circuit, and each signal input end of the multi-channel signal gating circuit is connected to each signal output end of the detected circuit one by one, and each signal input end of the detected circuit is one by one. One is connected to the signal output end of each channel of the channel switching circuit, the signal input end of each channel of the channel switching circuit is connected to the signal output end of the constant current source, and the controlled end of the channel switching circuit is connected to the On the drive signal output terminal of the single chip microcomputer.