If the menstrual period comes a little coffee-colored and then no more, in the clinic must be ruled out the possibility of the following diseases: 1, pre-eclampsia: because some patients to menstruation time although already pregnant, but there will be a small amount of bleeding, it is recommended to draw blood to check the blood HCG. this time is often through the urinary HCG test can not be detected, so check the blood HCG to understand whether it has been pregnant; 2, to rule out some kind of Diseases: for example, due to premature ovarian failure, the menstrual flow is significantly reduced, or there is pelvic tuberculosis or polycystic ovary syndrome, or drinking a lot of ice-cold drinks before menstruation, may cause this kind of menstruation a little bit of coffee-colored symptoms, it is recommended to find out the cause and then give appropriate treatment.