If the patient is newly pregnant, brown discharge is an abnormal condition, and the following three possibilities should be considered: First, the patient is intrauterine pregnancy, but due to the existence of many factors, biochemical pregnancy or embryonic development is affected by the occurrence of preeclampsia. In the case of biochemical pregnancy, the patient’s bleeding will gradually increase, just like the amount of menstruation. If it is a preeclampsia, the patient’s bleeding is usually less, accompanied by abdominal pain and discomfort, need to check the progesterone and HCG to comprehensively determine the situation, if necessary, the need for fertility preservation treatment. Secondly, the possibility of ectopic pregnancy should be considered. Ectopic pregnancy will have a small amount of vaginal bleeding, accompanied by pain on one side or in the middle of the abdomen, and need to determine the situation through dynamic observation of blood HCG, progesterone and ultrasound. Thirdly, it is important to consider that the patient’s pregnancy is combined with bleeding caused by cervical and vaginal lesions. For example, cervical intraepithelial neoplasia, vaginal inflammation, etc., need to be combined with other clinical symptoms and signs of the patient for appropriate examination, symptomatic treatment.