Brownish discharge after taking the pill is a normal physiological phenomenon and does not require special treatment. Brown discharge after taking the emergency contraceptive pill usually occurs in about 3-5 days after taking the pill, is due to the emergency contraceptive pill in the progesterone agent to make a small amount of endometrial exfoliation caused by the withdrawal of bleeding, most of them will be within 3-5 days to stop on their own. Short-acting contraceptive pills during the brown discharge, usually seen in the first 3 months of taking the pill, is due to the body’s estrogen level of a transient insufficient and caused by the breakthrough bleeding, the bleeding is small amount does not affect, adhere to the medication for about 3 months the bleeding will stop on their own. If the bleeding is caused by omission of short-acting contraceptive pills, there is a possibility of unintended pregnancy within 7 days after taking the replacement pills, and it is necessary to take good barrier contraceptive measures.