Coffee-colored discharge from the vagina without menstruation is often due to premature atrophy of the corpus luteum, resulting in insufficient luteal function in the body, causing irregular shedding of the endometrium and resulting in brown discharge from the vagina. It is advisable to take a blood test to find out if the progesterone is abnormal and then treat the condition accordingly. In the vast majority of cases, progesterone supplementation will be started in the second half of the menstrual period so as to avoid this situation of brown discharge before the onset of menstruation. It is also recommended to live a regular life, maintain a good mood, avoid excessive smoking and drinking, and ensure sufficient sleep, so that the endocrine secretion tends to be normal and endocrine disorders will not occur.