Radial artery compressor with automatic deflation function

The utility model discloses a radial artery compressor with an automatic deflation function, which relates to the field of radial artery compressors and comprises an air bag, one side of the air bag is fixedly connected with a communicating pipe, one end of the communicating pipe is fixedly connected with an air valve, two ends of the communicating pipe are respectively communicated with the air bag and the air valve, and one side of the air valve is provided with a needle tube. The problems that when the radial artery compressor is used, deflation needs to be conducted once every a period of time, and when medical staff deflates the radial artery compressor, the situation that the deflation time and the deflation amount are likely to be not well mastered, and consequently the wound of a patient is prone to bleeding due to the fact that the medical staff deflates the radial artery compressor are solved. Due to the arrangement of the deflation mechanism, when a patient uses the air bag for a long time and medi