Abstract: This paper firstly presents the requirments for temperature sensor in spacecraft,and then the characteristics of the main temperature sensors used in the flight and ground test of the spacecraft are summarized.Thereafter,by taking the widest used thermistor during the flight operation of spacecraft as the example,its application scheme in spacecraft is introduced.Additionally,the problems of the thermistor associated with the measurement precision,technical feasibility and reliability,which should be noticed,are also introduced.