Normal defecation after sinus surgery is fine, and you can eat and drink normally, as long as you do not eat spicy and irritating food. After defecation, you can use warm water or Chinese medicine to wash the area around the anus to clean the stool and avoid contamination of the incision of the sinus surgery. The sinus is generally not connected to the anus, but mainly in the area between the anus and the tailbone, so the surgery of the sinus does not damage the anus or the anal sphincter, so normal defecation is possible. The surgery of the hidden hair sinus can be divided into incision or flap transfer, there are one-time suture surgery, there are also open surgery, does not affect defecation, follow the medical advice after defecation can be cleaned.