There are many causes of pediatric mycotic stomatitis, such as poor personal hygiene habits, cross-infection, drug factors and so on. 1. Poor personal hygiene: children’s daily tableware did not clean and disinfected, or usually do not do a good job of personal hygiene, etc., may lead to contact with moldy food or objects, thus leading to mycosis stomatitis. 2. Cross-infection: parents do not do a good job of personal hygiene with mycobacterial diseases, can be cross-infected to the child, resulting in mycobacterial stomatitis phenomenon. 3. drug factors: children for a long time to apply more antibiotics, can cause flora imbalance, thus inducing mycosis stomatitis. Pediatric mycotic stomatitis has many causes, after the symptoms should be timely medical treatment, follow the doctor’s instructions to take standardized treatment, do not ignore the disease, so as not to delay the treatment of the condition.