If there is trichomonas infection in the routine test, trichomonas vaginitis will be diagnosed and can be cured by giving topical lotion and putting metronidazole effervescent tablets or tinidazole in the vagina for 7 days. 2. Infections, which can also lead to yellowish-green vaginal discharge, and in this case a culture of cervical discharge needs to be given. If it is common mycoplasma infection, you need to give azithromycin, erythromycin and other macrolides for oral treatment, the effect is better. 3. When suffering from endometrial inflammation, pelvic inflammatory disease, it will also lead to changes in the leucorrhea, give anti-inflammatory and physical therapy integrated for treatment.