At present, saw temperature sensor is widely used in various fields due to its advantages of high Q value, small volume and long-distance transmission. A general temperature measurement system is designed for this kind of sensor, which has good effect in the temperature range of 20 ℃ to 110 ℃. The system realizes the functions of excitation source transmitting, echo signal receiving and processing, temperature calculation, etc. The time-domain gate extraction algorithm is used to effectively solve the problem of jamming source submerging echo signal in the measurement process and improve the detection accuracy. The temperature rise experiment is designed to explore the relationship between the ambient temperature and the resonance frequency of the sensor. The measurement error is controlled below 5%. Compared with the traditional wired measurement device, it has low cost, high flexibility and can meet the special environmental measurement requirements.