Bleeding water all the time from the drainage tube after intestinal resection may be a normal phenomenon after the operation, but it may also be caused by too large surgical incision, bacterial infection and so on. 1. Normal phenomenon: the process of surgery will cause some damage to the local tissues, and at the same time, the pressure in the chest cavity is out of balance, so the drainage tube will bleed water, under normal circumstances, the blood and water is relatively small, and the color is relatively light. 2. Excessive surgical wounds: If the wounds caused by surgery are large, it will lead to bleeding water from the drainage tube all the time, and the color is light red, but it will be gradually reduced with the recovery of the condition. 3. Bacterial infection: If the wound site is accidentally infected by bacteria, the drain will also bleed, and the blood may appear yellow or cloudy, accompanied by local redness, swelling, pain and other symptoms. After the surgery, you need to take good care of the wound area to prevent infection. If the drainage tube keeps bleeding after intestinal resection, it is recommended to consult a specialist and give targeted treatment if necessary, and follow the doctor’s instructions.