Sensor technology occupies a very important position in the field of contemporary science and technology, and is a commanding height that people are fighting for in the development of high and new technology in the 21st century. In foreign countries, developed countries regard sensor technology as the key to the development of modern high and new technology. Since the 1980s, Japan has listed sensor technology as the top priority of high salvage technology, and the United States and other Western countries have also listed the basic knowledge of sensors as the key content of national science, technology and national defense technology development. At present, the world is facing a new technological revolution, the main basis of which is information technology. The development of information technology has brought tremendous, extensive and profound changes to all sectors and fields of human society and national economy. It is a powerful driving force for the development of human society today. And it is changing the production mode of traditional industry and driving the renewal and transformation of traditional industry and other emerging industries. In military defense, aerospace, Marine development, biological engineering, medical and health care, commodity inspection, environmental protection, safety scope, household appliances and other aspects, almost every modernization project is also inseparable from sensor technology. Pressure sensor is one of the most commonly used sensors in industrial practice, and the pressure sensor we usually use is mainly made of piezoelectric effect, such a sensor is also called piezoelectric sensor.