Mycoplasma hominis infection usually affects the respiratory system, reproductive system, digestive system, and urinary system, resulting in symptoms such as fever, profuse vaginal discharge, diarrhea, and frequent urination. 1. Respiratory system: After Mycoplasma hominis infection invades the human respiratory system, it will cause the human body to undergo an inflammatory response of the respiratory system. At the beginning of the disease, fever, headache, sore throat, etc., cough gradually intensified, and sputum is relatively small, or even dry cough is dominant, there may be persistent irritating cough. 2. Reproductive system: infection with Mycoplasma hominis may affect the fallopian tubes and the endometrium, thus causing endometritis or tubal inflammation, with the main symptoms including large amount of vaginal discharge, perineum and lower abdominal swelling and discomfort. 3. Digestive system: Mycoplasma hominis infection will affect the intestinal function, fever and diarrhea, secondary cause liver and spleen, hepatitis, pancreatitis. 4. Urinary system: Mycoplasma hominis infection of the human body usually causes inflammation of the urinary system, the most common lesion is urethritis, the clinical manifestations of urinary frequency, urinary urgency, urinary pain, urethral burning sensation, urinary difficulties, urethral secretion increase, urethral orifice redness and swelling. If the human mycoplasma infection, we should go to the hospital in time to consult the doctor, after clarifying the cause of the disease and active treatment.