Drainage tube seepage collection bag

The invention relates to the technical field of medical instruments, in particular to a drainage tube seepage collection bag which comprises a bag body, a pasting part and an opening are arranged on the bag body, the pasting part is used for pasting the bag body on the skin of a patient, the opening is matched with a puncture point of the patient, and the opening is used for enabling seepage seeping along the outer wall of a drainage tube to flow into the bag body through the opening; an anti-backflow device is arranged in the bag body and divides the bag body into a first storage area and a second storage area, the opening is located in the first storage area, the anti-backflow device enables seepage to flow in one direction, and the seepage flows from the first storage area to the second storage area. According to the anti-backflow infusion bag, the anti-backflow device is arranged in the bag body, seepage in the second storage area can be prevented from flowing back to the opening, dipping of the seepage t