For mycoplasma infection in men, the common causes are: inhalation of droplets, unclean sexual intercourse, mother-to-child transmission, indirect contact infection and so on. 1. Inhalation droplets: for Mycoplasma pneumoniae infection. When a patient infected with Mycoplasma pneumoniae sneezes or coughs, Mycoplasma pneumoniae will be released into the surrounding air through saliva and nasal cavity, resulting in accidental inhalation of droplets and infection. 2. unclean sexual intercourse: for the infection of Mycoplasma hyopneumoniae and Mycoplasma genitalium. This kind of mycoplasma is often parasitized in the genital tract, mainly through sexual contact transmission, can cause urethritis and other diseases, both men and women can be infected. The main manifestations of male patients are urethral itching, burning sensation, urethral urethral urethra redness and swelling. 3. Mother-to-child transmission: If the mother is infected with Mycoplasma, it is likely that the baby boy will be born with Mycoplasma infection. 4. Indirect contact infection: for example, use of public toilets, bath towels, swimming in public pools, etc., cross-infection may occur, it is recommended to do their own protection in public places. These are the common causes of mycoplasma infections in men, but also in women. It is important to protect yourself and seek medical attention if you develop mycoplasma infection.