Women should wait at least half a month to about a month after the removal of the catheter after appendicitis surgery before they can start having sex. The catheter removed after appendicitis surgery is usually not a urinary catheter, but a drainage tube, the main function of which is to make the fluid from the inflammation in the abdominal cavity flow out and to prevent re-infection in the abdominal cavity. It is best for women to have sex about half a month to a month after removing the catheter after appendicitis surgery, or you can choose to extend the recovery time according to your own physical condition. Premature sexual life as well as intense exercise may cause obvious pain in the wound, or even make the appendicitis incision crumble open, resulting in poor healing of the incision. After appendicitis surgery, you should pay attention to rest, avoid strenuous activities, as well as ensure a balanced diet to promote the recovery of the incision.