Lubricating oil system of gas compressor

The utility model discloses a gas compressor lubricating oil system which comprises a compressor body, an oil supply pipe and an oil return pipe, and the compressor body is respectively connected with the oil supply pipe and the oil return pipe through an oil supply port and an oil return port to form a lubricating oil flow direction loop. A fine filtering unit, a cooling unit, a coarse filtering unit and a heating unit are sequentially arranged in the lubricating oil flowing loop according to the flowing direction of lubricating oil. Through flow direction control of a first one-way valve and a second one-way valve, the lubricating oil is driven by power of an oil pump to pass through a coarse filter, secondary coarse filtering treatment is conducted on the lubricating oil, the use quality of the lubricating oil is further improved, and then the temperature of the lubricating oil is increased through an electric heater; and the temperature can reach the temperature of directly entering the compressor body, s