Whether or not mumps affects male fertility needs to be analyzed. Purulent mumps does not affect fertility; viral mumps may affect fertility. 1. Purulent mumps: related to Staphylococcus aureus infection, the typical clinical symptoms are fever, accompanied by parotid area redness, swelling and hot pain symptoms, usually do not invade the male reproductive system to induce infertility. 2. Viral mumps: generally induced by viral infections, which can easily lead to testicular invasion and induce testicular inflammation, resulting in the ability of the testes to produce sperm is affected, but also reduces the quality of sperm, resulting in male fertility is affected. Mumps has a certain degree of danger, need to go to the regular hospital in time for examination, for the specific type of disease treatment.