Integral negative pressure suction device

The utility model discloses an integral negative pressure suction device. A negative pressure device is provided with a first suction tube and a second suction tube, the first suction tube and the second suction tube are communicated with the negative pressure device and are connected with connecting sleeves, and seal caps are arranged above the negative pressure device and are connected with the first suction tube and the second suction tube; a liquid storage bag is arranged below the negative pressure device, a communicating tube is arranged between the liquid storage bag and the negative pressure device, communicated with the storage bag and the negative pressure device, provided with a check valve and connected with an anti-reflux membrane, the liquid storage bag is provided with a liquid draining tube which is communicated with the liquid storage bag, and a liquid draining valve is arranged on the liquid draining tube and can cut off the liquid draining tube; and a garbage collection bag is arranged outside the liquid storage bag and connected with the liquid storage bag, and a first elastic band is arranged at an opening of the garbage collection bag. The device has a simple structure and is convenient to use, all parts are connected to form an integral structure, the connecting tightness is high, the suction effect is good, and the safety of a user is guaranteed.