Two days after the end of menstruation, brown discharge, if it occurs within 7 days of menstruation is a normal phenomenon, may be the uterine cavity or vaginal accumulation of menstrual blood is not timely discharged due to. Normal menstrual period is 3-7 days, if more than 7 days belongs to the prolongation of the menstrual period, menstrual period of 7 days has passed, after the clean brown secretion, considering the luteal function is insufficient and other endocrine disorders caused by the menstrual period just after the uterine lining has not yet been fully repaired, the excessive stimulation of coitus leads to brown vaginal secretion. And gynecological diseases may also be related, such as cervical polyps, cervical erosion, endometriosis, etc., should go to the hospital for pelvic ultrasound, gynecological internal examination, etc., to clarify the brown discharge is from the uterine cavity or cervical surface, according to the cause of the treatment, usually to ensure that a regular work and rest time, don’t stay up all night, avoid smoking, alcohol, and regulate the emotional state.