Women’s body fishy smell may be certain physiological phenomena, may also be the manifestation of certain diseases symptoms, such as vaginitis, cervicitis, reproductive system tumors, etc., should be timely consultation to identify the cause of the disease. 1. Physiological factors: if you don’t change and wash your underwear in time, it is easy to cause the body to odor, itching and other discomforts, and in serious cases, the following will appear fishy odor. Usually should pay attention to the care of the pubic area, try to wear cotton underwear, shower, change underwear, keep the local clean and dry. 2. Pathologic factors: (1) Vaginitis: If there is bacterial or trichomonas vaginitis, there is a large number of anaerobic bacteria multiplying in the vagina, which will lead to accelerated glycogen decomposition in the vagina, causing the body to have a fishy odor. Some women will also have increased amount of leukorrhea and abnormal color of leukorrhea, such as grayish-white, yellowish-green and so on. (2) Cervicitis: women with cervicitis or cervical erosion-like changes may cause women’s leukorrhea to increase, which will lead to a fishy odor. (3) Tumor of reproductive system: such as precancerous lesion of cervix, cervical cancer, endometrial cancer, fallopian tube cancer, etc. With the development of the disease or the propagation of cancer cells, it will cause the amount of leucorrhoea of the reproductive system to increase, and if the pubic area is not cleaned up in time, the fishy and malodorous smell of the body will appear. If physiological causes are ruled out, further examination should be conducted, and the doctor should be asked to clarify the cause of the disease, and appropriate treatment should be carried out if necessary.