I have treated many patients with presacral cysts inside and outside the province, and also received many online patient consultations, and found that there are some misunderstandings in the preoperative understanding, intraoperative treatment and postoperative complications of presacral cysts, regardless of the patients and doctors. As a result, patients with pre-sacral cyst cannot drain the fluid after surgery, and they are as if they are haunted by ghosts and suffer a lot. Myth 1: Anterior sacral cyst does not have any symptoms at present, wait for a few years before surgery. Many patients consulted that the presacral cyst was found early, and currently there are no symptoms, and they want to wait for a few years before surgery. However, in fact, through what is seen during surgery and combined with the treatment experience of many patients whose pre-sacral sinus tracts do not heal, most of the pre-sacral cyst walls are closely related to the rectal intestinal wall and are difficult to be separated. Therefore, the larger the volume of the presacral cyst, the larger the adhesion surface with the rectal wall, and the more difficult it is to separate. The pelvic space is large, and by the time there are symptoms of compression, the cyst volume is already large, so the earlier the pre-sacral cyst is removed, the better. Myth 2: Pre-sacral cyst is a benign lesion, and it is fine to leave some cyst wall. Quite a lot of surgeons think that presacral cyst is a benign lesion and it is fine to have some residual cyst wall. I also see from the re-operation of recurrent patients that some patients do have residual cyst wall in the rectal intestinal wall, which leads to continuous purulent discharge from the presacral area. Some doctors see that the cyst wall is closely adhered to the rectal intestinal wall, worry about separation and breakage, and think that benign lesions have no effect, so they should be cauterized with electric knife or anhydrous alcohol, not knowing that it is some residual cyst wall that causes the presacral sinus tract not to heal after surgery. Myth 3: Pre-sacral sinus tract does not heal after sacral cyst surgery because of infection. Quite a number of surgeons think that the continuous flow of pus-like discharge from the presacral area after presacral cyst surgery is caused by presacral infection, so they take measures such as frequently giving drug changes, local debridement and pus bacterial culture, and switching to antibacterial drugs, but the effect is not satisfactory. Because the root cause is the residual sacral cyst wall of the pre-sacral cyst, the mucus secretion from the cyst wall does not drain smoothly and leads to co-infection, so it is difficult to achieve the effect by treating the symptoms but not the root cause.