The maintenance of the pressure sensor is the key to ensure its long-term stable operation and accurate measurement. In daily maintenance, the appearance of the sensor should first be checked regularly to ensure that there is no physical damage, corrosion or blockage, especially the measurement port should be kept clean to avoid impurities affecting the measurement accuracy. Secondly, pay attention to check the connection line of the sensor to ensure that it is tight and not loose to prevent signal interruption or error caused by poor contact. In addition, according to the use environment and sensor specifications, regular calibration is carried out to eliminate measurement deviations due to long-term use or environmental changes. Sensors working in extreme temperature, humidity or vibration environments also need to pay special attention to their working environmental conditions, and take protective measures if necessary, such as installing a protective cover or adjusting the installation position. Finally, maintenance records are established, and the time, content and results of each maintenance are recorded in detail, so as to track the status of the sensor, discover and solve problems in time, and extend its service life.