If the vaginal discharge appears like sloppy leucorrhea with a foul odor, it is most often caused by endometrial lesions, most commonly cancer of the endometrium, and ultrasound examination is recommended. If ultrasound reveals thickening of the endometrium with uneven echogenicity or abnormal clinical masses, it may be caused by lesions, and it is recommended to perform diagnostic scraping as soon as possible and send the scraped tissue to pathology for clinical diagnosis. If it is endometrial cancer, clinical intervention is recommended as soon as possible. In addition, this kind of leucorrhea is also clinically seen in cervical cancer, which may appear with blood and is accompanied by foul odor, and gynecological examination is recommended to find out whether there are local lesions in the cervix.