Secretion usually refers to vaginal secretion, and vaginal secretion is yellow like thick phlegm, consider and gynecological inflammatory diseases such as vaginitis, cervicitis, endometritis and so on. Normal female leukorrhea is transparent or milky white, and no odor, for the vagina can play the role of lubrication and cleaning protection. If the leukorrhea appears like yellow phlegm, it is mostly indicative of gynecological inflammatory diseases, such as trichomoniasis, bacterial vaginitis, mycosis vaginalis, cervicitis, endometritis, etc., which is often accompanied by increased discharge, vulvar itching, burning pain, lower abdominal pain, fever, etc. The patient is advised to go to the hospital. It is recommended that the patient can go to the hospital for consultation, and cooperate with the doctor to complete the relevant examinations to determine the cause, and then do targeted treatment and therapy.