Small abdominal pain one month after hysteroscopic surgery may be caused by improper diet, fast approaching menstruation, infection in the uterine cavity and so on. 1. Improper diet: patients do not pay attention to diet after the surgery, eat too cold food, rest is not good, or the abdomen is cold, etc., may cause abdominal pain symptoms. 2. Menstruation: after one month of hysteroscopic surgery, the trauma is basically back to normal, and most of the women will have menstruation soon, which may cause pain in the abdomen, if there is no other discomfort, it is a normal physiological phenomenon, and observation can be done. 3. Infection of the uterine cavity: patients in the recovery process of the uterine cavity stasis or wound infection, may cause abdominal pain, some patients may also be accompanied by abnormal vaginal secretions, elevated body temperature and so on. It is recommended that the patient consult a doctor in time for examination to clarify the cause of the disease and then carry out targeted treatment, pay attention to monitoring the condition in life, and follow the doctor’s instructions for regular checkups.