Tinea capitis is a fungal infection of the head that is somewhat contagious. There are four types of tinea capitis depending on the clinical symptoms, namely, ringworm yellow, ringworm white, ringworm black spot, and ringworm pustulosis, and their causative agents are Trichophyton rubrum, Microsporum canis, and Trichophyton purpureum, respectively, of which the mycelium and spores are somewhat infectious. They are hardy and resistant to external stimuli such as heat, cold, acid, alkali, and dryness, and require hot water boiling and ultraviolet disinfection to kill them completely. Transmission is mainly through direct contact with the patient, affected animals or asymptomatic carriers, and also indirectly through contaminated haircutting tools, pillowcases, hats and other items. Therefore, once a person with ringworm is found in your life, early detection and treatment are recommended along with good disinfection and isolation. Pets with similar conditions, especially domestic cats and dogs, should be treated accordingly. If a student has the disease, schools, public bathhouses, and public barbershops should be educated, disinfected, and isolated in addition to homes. In summary, tinea capitis is somewhat contagious, so in addition to actively treating the disease itself, it is also important to prevent isolation, mainly from two perspectives: disinfection of personal items and isolation of patients and affected animals to avoid cross-infection.