If a woman’s vaginal discharge has an odor, it is mainly due to the following clinical reasons. The first and most common cause is because of bacterial vaginosis caused by vaginal discharge odor, this odor is often fishy, in the clinic is mainly caused by Gardnerella infection, it is recommended to use metronidazole pessary inserted into the vagina for treatment, continuous use of medication for 1 week. The second one is caused by cervical cancer, when the cancerous tissue is necrotic, it will be manifested as vaginal discharge with a strong foul smell, and it is recommended to do cervical cancer screening. The third one is caused by endometrial cancer. When endometrial cancer is in the advanced stage and combined with infection, it will also be manifested as vaginal discharge with a strong odor. It is recommended to find out the condition of the endometrial lining through ultrasound examination, and do diagnostic scraping if necessary.