The main causes of red spots on the male urethra include local inflammation, viral infection, and fungal infection. 1. Local inflammation is mainly caused by glansitis. Normal male prepuce sac parasitizes a large number of bacteria, and these microorganisms can cause infection when the body’s resistance drops. In addition, some pathogens can be transmitted through sexual contact and other means. 2. Viral infections can also cause red spots on the urethra, such as warts. If the red spots on the urethra are getting more and more and are cauliflower-shaped, then you need to check to make clear whether you are infected with HPV (human papillomavirus). You need to go to the hospital immediately for examination. 3. Fungal infection is mostly caused by the patient’s long foreskin, at this time you need to thoroughly wash the glans, keep the local dry and hygienic. And take antibacterial drugs and so on. If there is a red spot on the urethra, you should consult a doctor in time and follow the doctor’s instructions for standardized treatment.