Normal human urine does not spread diseases because it is just a waste product after the body has absorbed the nutrients. If the owner of the urine suffers from certain infectious diseases, then the urine should avoid contact with the human body. Mainly: First, suffering from certain bacteria, viruses or mycoplasma infections contact with normal people with broken mucous membranes on the body surface, these bacteria, viruses, mycoplasma will be infected through the wound to normal people. Second, if suffering from hepatitis, pneumonia, tuberculosis and other infectious diseases, then the urine should be treated through special sterilization means before discharge. Third, bacteria can also be transmitted to other people through the male urethra through unclean sex. The chances of infectious transmission of urine are not very high, but there is a chance of transmission, and protective measures are needed to get in touch.