Leukorrhea is watery and smelly, the most common clinical causes are the following: 1, caused by bacterial vaginosis, it is recommended that this situation can be vaginally inserted into the metronidazole suppository for treatment, continuous use of medication for a week, the symptoms will disappear; 2, due to endometrial cancer, this situation in the clinic, the secretion will have a great stench and clinically there will be slop as a secretion. The secretion will be like slop, so it is recommended to do ultrasound examination as soon as possible to find out whether the endometrium has uneven echogenicity and abnormal thickening, and then decide whether it is necessary to do diagnostic curettage; 3. If there is a watery secretion in the leukorrhea, it may be clinically due to cervical cancer. Therefore, when doing gynecological examination, you can do cervical cancer screening if necessary, and then decide the treatment plan according to the results.