This series of products using dial display or microcomputer control digital display. When the pressure of time at a glance, in case of sudden power failure,2 hours keep the pressure, with pressure leakage automatic compensation function can be set to a constant pressure working value. The working pressure greater than the set pressure of 3kpa(22mmHg), automatic pressure relief to the pressure range, pressure setting in 100kpa(750mmHg) adjusted operation increase or decrease the pressure value at any time. Slow phase was adopted after the operation Bleed, can prevent cardiovascular and cerebrovascular patients with sudden ischemia. Automatic memory of the last operation parameters for the next operation, or as a basic parameter, save time. When the working pressure exceeds the range, it has audibled and light alarm prompt and operative time remaining 10 minute,5 minute,1-minute alarm. Standard tourniquet cuff with cotton fabric does not hurt the skin, high strength and durable TPU internal material. At the same time, high temperature and high-pressure silicone internal material can be optional.