After taking progesterone tablets, the patient still has brown discharge, which mainly indicates two possibilities: First, the patient has pre-miscarriage caused by luteal insufficiency or progesterone deficiency, although progesterone is replenished after taking progesterone tablets, but the patient has accumulated blood in the uterine cavity before, and such accumulated blood in the uterine cavity needs to be discharged out of the body slowly, so there will be a small amount of brown discharge in the vagina after replenishing progesterone, which usually needs After a week or so, the bleeding will stop on its own. Secondly, there may be other factors causing the bleeding, such as other endocrine disorders, endometrial inflammation or cervical lesions. If the bleeding is caused by these factors, the effect of progesterone tablets alone is not good, and further examination and treatment should be carried out according to the patient’s other clinical symptoms and signs.