Based on the described situation, if a child has been frightened, identify the cause of the scare. If it is clear that the child is scared, comfort them more. If there is no clear reason to explain the scare, it is recommended to conduct a thorough examination. During the examination, pay attention to observing the cause and taking appropriate treatment measures. Pay more attention to caring for children in their daily lives, especially during the age of 3, as this is a more mischievous period and requires more love and care.