Trichomonas vaginitis is one of the common types of vaginitis in women and is classified as a sexually transmitted disease. It can cause symptoms of urinary tract infection by invading the urinary tract, such as frequent urination, urgent urination, painful urination, and even bloody urine. The main treatment involves the use of systemic medications, currently primarily nitroimidazole drugs, including metronidazole and tinidazole. The main treatment regimens include taking two pills of metronidazole as a single dose, two pills of tinidazole as a single dose, or 400 mg of metronidazole twice daily for seven consecutive days. Sexual partners need to be treated simultaneously, and unprotected sexual intercourse should be avoided during the treatment period. Within three months of treatment, patients should be re-examined, generally after the menstrual period is over. If three consecutive re-examinations are negative, it can be declared cured.