Description： The design principle of arteriovenous pulse pneumatic pressure therapy instrument adopts foreign advanced anti-embolism pump technology, the airbag is tied to the patient's limb, and the power supply is turned on to start working. Through the airbag inflatable 20S, produce appropriate pressure, uniformly sequential pressure on the lower limb ankle, calf, blood night, lymphatic fluid driven to the proximal end of the limb; exhaust time through the computer background calculations and the patient's lower limb vein filling speed again related to the general 40S, at this time, the arterial blood supply can be rapidly enhanced, effectively alleviate the ischemic state of the limb. Through cyclic inflation and exhaust, the limbs are prompted to produce pulsatile blood, improve the speed of the lower limb return blood flow, improve the phenomenon of slow blood flow in the limbs, thus effectively preventing the formation of microthrombosis in the lower limb deep veins.