The rate of pseudo-healing in anal fistula patients is very small, but whether an anal fistula can be completely cured in one visit depends mainly on the complexity of the disease itself in anal fistula patients. For simple anal fistula, the lesion is not very deep and the cavity is not very large, it can be almost completely cured at one time; for patients with high complexity anal fistula, the lesion is deeper and the cavity is larger, some patients need to take anal fistula hanging treatment, it is possible that during the healing process, it cannot be completely cured at one time. At the same time, for patients with high complexity anal fistula, in the process of surgery, in the protection of anal function, the clinician may take the method of staged surgery, so one time can not completely solve, need 2-3 times, in order to completely treat anal fistula. Therefore, patients with anal fistula have a relatively small chance of pseudo-healing, but whether the anal fistula can be completely cured at once depends mainly on the complexity of the anal fistula disease itself.