Under normal circumstances, leucorrhea is clear and transparent, and a small amount belongs to normal leucorrhea. If there is brown color and smell, it indicates that there is blood and smell in the leucorrhea. Consider bacterial vaginitis or trichomonas infection, and there is blood in the brown leucorrhea. The blood volume is small, and the blood stays in the vagina for a long time. The leucorrhea will be brown. At this time, be sure to go to the hospital to find out the cause of the brown leucorrhea, and then treat symptomatically. Brown is commonly seen clinically. If it occurs during ovulation, the estrogen level in the body is low during ovulation, and there will be leucorrhea brown or endocrine disorder in luteal phase. Cervical erosion, cervical polyps, cervical cancer and cancerous lesions can all have this kind of leucorrhea brown condition. At this time, we must go to the hospital for examination and symptomatic treatment.