Non-gonococcal urethritis in men usually causes urinary irritation signs, and may also have symptoms such as redness and swelling of the urethral opening, increased secretion, etc. Some patients may have systemic symptoms, and fertility may be affected in severe cases. Due to the presence of infection in the urethra, it can cause obvious urinary irritation symptoms, such as painful urination, frequent urination, urinary urgency, etc. Due to the stimulation of inflammatory substances, the urethral orifice can be red and swollen, and the urethral orifice of the white or yellow purulent discharge. After the aggravation of the infection, it can lead to local bleeding in the urethra, causing hematuria, and some systemic symptoms, such as fever, chills, etc. The prolonged presence of nongonococcal urethritis may lead to male infertility. Therefore, after the symptoms of non-gonococcal urethritis, it is recommended to seek medical examination and treatment as soon as possible to avoid adverse effects.