Trichomoniasis is usually contracted by sexual intercourse. In women, it mostly presents as trichomoniasis. The main manifestations are abnormal changes in the leucorrhoea and vulvar itching. Trichomoniasis is a common form of vaginitis in women. When a woman is infected with trichomonas, her vagina produces yellowish-green foamy leucorrhea, accompanied by vulvar itching. In severe cases, there may be slight pain in the lower abdomen, swelling, redness and congestion of the vaginal mucosa, resulting in a strange itching and burning sensation in the vagina. Occasionally, frequent and urgent urination may occur, often causing urethritis. The most straightforward way to diagnose trichomoniasis is to do a routine examination of the leukocyte secretions. The result shows a positive trichomonas infection. Treatment can be oral or metronidazole; vaginal tablet of methotrexate or 1 tablet of methotrexate vaginally applied after nightly vaginal douching; external Chinese herbal bathing: decoction of herbs to clear heat and detoxify, kill worms and relieve itching. Secondly, after the course of treatment, it is important to continue to review the routine laboratory tests of the leucorrhoea to check the effect of the medication. Trichomonas vaginalis is prone to recurrence, so it is important to take precautions to prevent reinfection while treating it. Pay attention to the hygiene of the vulva, especially when having sex. The towels and washcloths used daily should be disinfected properly. Therefore, if you have vulvar itching and yellowish-green leucorrhea, you should consult a doctor for a routine examination of the leucorrhea, and after confirming the diagnosis of trichomoniasis, you should actively take treatment and use the right medication.