In the early stages of pregnancy, due to changes in hormone levels in the body, it will lead to an increase in vaginal secretions and become sticky, most of the secretions appear white, a few will be brown, and will not have a strange odor. The formation of brown leukorrhea is mostly due to the shedding of the endometrium in early pregnancy, the shedding tissue and leukorrhea mixed together to become brown, which is a normal phenomenon and does not require special treatment. However, if the color of the brown leukorrhea gradually deepens or is mixed with blood or becomes bright red, we should be vigilant and promptly conduct blood HCG, progesterone, uterine adnexa ultrasound and other related examinations. If there are signs of preterm miscarriage, it is necessary to be treated early to avoid adverse consequences. In addition, if the leukorrhea is yellow or tofu-dregs-like, with an abnormal odor, it is often considered to be infected, and needs to be actively treated with anti-inflammatory therapy.