The pink color of the wound on the fifteenth day of anal fissure surgery is the result of granulation tissue growth, which allows you to continue with your current treatment plan and avoid wound infections that can affect healing. Anal fissure surgery is usually performed in the form of lateral incision and radical surgery, when anal fissure surgery is performed incisively, the surgical wound is larger and requires a longer recovery period. In the process of wound healing and recovery, the most important thing is the growth of traumatic granulation tissue, usually in the postoperative 1~2 weeks of granulation tissue growth is significant. On the fifteenth day of anal fissure surgery, the granulation tissue of the wound is mostly pink. When the wound bleeding obvious granulation tissue, the surface wound healing ideal. At this time, due to the rich blood supply of the wound, if the wound is not clean and dry, it is easy to harbor bacteria causing wound infection. Therefore, when pink granulation tissue appears, it is necessary to continue treatment and avoid wound infection. It is recommended that patients with anal fissure surgery should have regular outpatient checkups after surgery, and if there are any abnormalities or discomforts, timely treatment should be given; if you have any doubts about the healing of the wound after surgery, you can consult a professional doctor, and should not make judgment on your own or abuse medication, so as to avoid affecting the recovery of the normal wound.