Yellowish-green crusty discharge from underwear is a common clinical condition, mostly seen in women, and may be caused by trichomoniasis, acute cervicitis, endometritis, cervical cancer and endometrial cancer. 1. trichomoniasis: the most common clinical symptom is a grayish-yellow or yellowish-green foamy leucorrhea, which will show yellowish-green crusty discharge after air-drying of underwear and is accompanied by vulvovaginal itching. 2. 2, acute cervicitis: these two diseases will not directly cause yellow-green discharge, but will lead to an increase in leucorrhea, followed by yellow-green crusty discharge as the wind dries and oxidizes; 3, endometritis: usually bacterial infections, such as E. coli, staphylococcus, etc., manifested as leucorrhea abnormalities, purulent leucorrhea can be manifested as green, accompanied by symptoms, such as pain and discomfort in the pelvic region, abnormal menstruation, Dysmenorrhea, etc. For treatment, oral drugs such as third generation cephalosporin, doxycycline, metronidazole can be used in combination, and antibiotics can also be injected into the uterine cavity to make the inflammation subside, and if the condition is serious, surgical treatment can be performed, such as drainage of pus in the uterine cavity and cleaning of the uterine cavity; 4. Cervical cancer and endometrial cancer: when infection occurs, purulent discharge can also oxidize and crust into yellowish green, but due to vaginal Irregular bleeding and other manifestations are more obvious, and yellow-green crusty discharge is not the main or common symptom. In case of crusty discharge, it is necessary to consult a doctor for a routine examination of the leucorrhoea and to communicate actively about your symptoms in order to assist in the diagnosis. Under the doctor’s guidance, you should take appropriate medication or use topical douches to treat the problem. You should pay attention to your vaginal hygiene, change your underwear regularly, and avoid eating spicy and stimulating foods.