The yellowish water and fishy odor of the late stage of menstrual discharge need to be treated with medication as prescribed by the doctor. Dew is formed when the uterine lining falls off and blood flows out of the vagina after childbirth. Normal discharge has a bloody but not foul odor and lasts for 4 to 6 weeks. When the vaginal discharge is yellow and accompanied by a fishy odor, it suggests a uterine infection, which needs to be treated with broad-spectrum, adequate and effective antibiotics as prescribed by the doctor, such as cefuroxime sodium, tinidazole, and so on. After delivery, we should pay attention to personal hygiene, keep the vulva clean and dry, change and wash the underwear, prohibit tub baths and sexual intercourse for 6 weeks, pay attention to the situation of vaginal bleeding, but also to increase the diet and nutrition in order to promote the body to recover and strengthen the body. Clinically, when there is an increase in the amount of vaginal discharge accompanied by odor, uterine pain, fever and other symptoms need to go to the hospital in a timely manner. When the late discharge of yellow water and fishy odor, you need to go to the hospital in a timely manner, and active treatment.