Progesterone injection can be used to treat patients with preeclampsia, if patients with preeclampsia, low progesterone, for this patient, need to supplement progesterone treatment, through the luteinizing hormone injection can improve the patient’s luteal insufficiency, for the maintenance of pregnancy has an important significance to help. Progesterone injection can also regulate menstruation and treat menstrual disorders, especially for identifying whether the patient has hypoestrogenemia. After the progesterone injection, observe the vaginal bleeding, if the vaginal bleeding is more than two weeks without menstruation, in this case, it is considered that there is central amenorrhea or ovarian function decline, need to further check the sex hormone six, according to the results of the sex hormone six test, if necessary, consider sex hormone replacement therapy.