Abstract: According to the existing flameproof computer of while-drilling telemetry had some defects, such as it could not provide power supply and communication for the probe of while-drilling telemetry system, the interference of electrical isolation with direct isolation methods was large, it designed a new type of mine flameproof and intrinsic safety computer. After testing, the computer was suitable for the while-drilling measurement system of directional drill of one kilometer, and applicable for data, video and sound processing of remote level drill control system, multi-media processing display devices in coal mine.