The utility model provides an automatic temperature control device of gas circuit pipe line, this automatic temperature control device of gas circuit pipe line includes control module, the relay, temperature sensor and heat band, the temperature of this temperature sensor measurement gas circuit pipe line, and transmit the gas circuit pipe line temperature data who gathers for this control module, this control module connects in this temperature sensor, carry out the comparison with the gas circuit pipe line temperature data who gathers with given initial temperature, give this relay with the transmission control signal, this relay is connected in this control module and this heat band, the break -make of the power of this heat band is controlled to this relay under this control module's control, the normally open contact of the rela, heat the gas circuit pipe line. The effectual noncongestion of guaranteeing the gas circuit of this automatic temperature control device of gas circuit pipe line has improved the accuracy and the continuity of gas logging data, is favorable to discovery and protecting hydrocarbon reservoir, has better economic benefits and social to the exploration and the development of oil gas field.