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Aiming at the problems of high complexity and difficult wiring inside the aircraft, a wireless communication mode is proposed to improve the flexibility of sensor deployment and reduce the cost of cable transportation and installation. In order to maximize the service life of the wireless sensor node, the low-power consumption optimization design of the thermocouple wireless sensor is carried out. In terms of hardware, an energy block management model is designed based on the DPM mechanism, and the core processor selects a domestic low-power chip GD32E230C8T6; in terms of software, a low-power strategy based on a star topology network is proposed, and nodes are given based on this strategy. Mathematical expression for residual energy. The experimental results show that the current of this node is lower than 1uA when it is in shutdown storage and transportation state, and the current in standby mode is lower than 23mA, which proves that the designed thermocouple wireless sensor has the characteristics of low power consumption and stability, and can effectively prolong the life of the node.