With menstruation and high fever, the patient first needs to be examined accordingly based on other clinical signs and symptoms to find out the cause before treatment. During menstruation it is possible to carry out examinations and treatments without problems. First of all, the patient should observe whether there is any abdominal pain, vaginal bleeding with no foul odor. If the patient has a high fever during menstruation, accompanied by abdominal pain and foul-smelling vaginal bleeding, it should be considered that it may be caused by infection. Because women bleed vaginally during menstruation, blood is the best petri dish for bacteria, and it is easy to cause infection if you take a basin bath, have intercourse or do not pay attention to hygiene. Patients need to do gynecological internal examination, check the blood routine, C-reactive protein and so on. If it is determined that the infection is caused by, need to carry out blood culture and drug sensitivity test, and according to the results of the examination to choose sensitive antibiotics, intravenous infusion for treatment, need to be treated for 7-10 days. After exclusion of infection, the patient should observe whether the high fever is caused by cold or other reasons, and need to check the blood routine, and according to other clinical symptoms and signs, and then use other tests to find out the cause of the disease, and symptomatic treatment. While looking for the cause of the treatment, the high fever should be reduced first, you can use ibuprofen, Chaihu injection, Lianhua Qingdian Granules and other drugs to reduce fever, and then after finding the cause of the symptomatic treatment.