The causes of children’s crooked mouth and eyes are facial neuritis and occupational lesions of the central nervous system. 1. Facial neuritis: Facial neuritis, also known as facial nerve paralysis, is mainly due to damage to the facial nerve, resulting in facial muscle paralysis, which can cause children to have a crooked mouth and eyes. The causes of this disease are infection, trauma, inflammation immunity and so on. 2. Occupational diseases of the central nervous system: if the child has a brain tumor, acute intracranial hemorrhage and other diseases, it will also indirectly damage the facial nerve, leading to the symptoms of crooked mouth and slanting eyes. Some children have headache, nausea, vomiting and other symptoms. If children have symptoms of crooked mouth and eyes for a long time, they should pay attention to it, go to the regular hospital for examination in time, and follow the doctor’s instructions to receive treatment.