Drainage fluid is not necessarily bad surgery, sometimes it is very normal, for example: 1, the patient is doing the choledochotomy, the abdominal cavity will have a T-tube drainage, there will be a lot of bile drainage, general drainage fluid per day in the 300-1,000mL or so, this is normal, with the prolongation of time, the diet is better, may be the drainage fluid will be gradually reduced, in the final removal of the T-tube, the drainage fluid can be completely stopped; 2, Abdominal infection caused by the abdominal cavity, when the abdominal cavity infection will also lead to a lot of drainage fluid, which is not too worried, can be regular anti-inflammatory treatment, oral nutritional elements, such as fish, shrimp, green vegetables, etc., if necessary, can be given to the peripheral venous nutritional supportive therapy, the drainage fluid can be gradually improved; 3, the emergence of gastrointestinal fistula can also lead to increased drainage fluid, which need to find the primary care physician in time for counseling. So if the drainage fluid is more, you can communicate with the attending physician and ask about the specific condition.