The white mucus on the ninth day of anal fistula and hemorrhoid surgery is considered to be a normal phenomenon, or it may be related to postoperative infection, anal fistula recurrence and other conditions. 1. Normal phenomenon: due to anal fistula and hemorrhoid surgery, there will be wounds in the anal area, the recovery of wounds requires a certain amount of time, in the recovery process, there will be tissue fluid, light blood and water outflow, mixed together will form a white or yellowish-white mucus. 2. Post-operative infection: If the mucus is accompanied by a foul odor, and there is local pain and fever, you need to consider that it is caused by post-operative infection. 3. Anal fistula recurrence: anal fistula and hemorrhoids may recur even after treatment. When recurrence occurs, it will be accompanied by symptoms such as increased secretion, anal moisture, anal itching and the presence of meat bumps. The above situation, taking into account the causes of more, we recommend that patients seek medical attention in time, clear diagnosis, follow the doctor’s instructions to give appropriate treatment, to avoid delaying the condition.