The appearance of watery leukorrhea can be seen in physiological reasons, can also be seen in pathological reasons, such as inflammation of the reproductive system, reproductive system tumors and so on. 1. Physiological reasons: normal leukorrhea is generally white, transparent, odorless, sticky secretion, such as during pregnancy, when the hormone secretion increases, vaginal secretion can increase, become thin, thus appearing like watery leukorrhea, but the color and smell are generally unchanged. Generally no special treatment is needed, and attention should be paid to local hygiene. 2. Inflammation of the reproductive system: If you don’t pay attention to local hygiene, unclean sex, low resistance and so on, there may be infections of the female reproductive system, such as trichomonas vaginitis, bacterial vaginitis, etc. Under the stimulation of inflammatory factors, there may be an increase in local secretions, resulting in thin leukorrhea, which is often yellow, yellowish white or yellowish green, off-white, frothy, sour, fishy and so on. 3. Tumor of reproductive system: such as cervical cancer, vaginal cancer, etc., under the stimulation of tumor factor and local inflammation, the secretion may increase, thus the leukorrhea may increase and become thin and watery, but usually accompanied by pain, pain during sexual intercourse, bleeding, abnormal lumps and other symptoms. If watery leukorrhea occurs, it is necessary to go to the hospital for consultation and examination in time, and follow the doctor’s instruction after clarifying the cause of the disease, so as to avoid delaying the condition.