If a woman has coffee-colored blood in early pregnancy, she may be suffering from pre-eclampsia, which may be related to low progesterone level, thin endometrium, inflammation in the uterine cavity, mild uterine malformation, etc. Women need to go to the hospital for ultrasound, blood test for HCG and progesterone for comprehensive treatment to facilitate the development of the fetus. When brown discharge appears in the middle or late stages of pregnancy, it may be due to the presence of placenta previa or mild placental abruption, which can be diagnosed through gynecological ultrasound and treated with symptomatic and fetal preservation treatment to protect the health of the pregnant woman and promote the development of the fetus.