Pressure control system of endoscope

The utility model provides a pressure control system of endoscope, the control system includes endoscope body, sensor processing chip and perfusion equipment, endoscope body includes insertion portion and operation portion, the operation portion is connected with the tail end of insertion portion, the head end of insertion portion is equipped with piezoelectric transducer, the piezoelectric transducer is equipped with the sensor processing chip, and the perfusion equipment is equipped with the sensor processing chip. A sensing surface used for sensing pressure is formed at the side part of the piezoelectric sensor, the sensing surface is partially exposed outside the head end part so as to be in direct contact with body fluid in the cavity, and the piezoelectric sensor is provided with a sensing wire used for transmitting signals; a sensing wire of the piezoelectric sensor is inserted into the insertion part in a penetrating manner; the sensor processing chip is electrically connected with the sensing wire, a