Children with concussion may have transient loss of consciousness, headache, vomiting, dizziness and other uncomfortable symptoms, and should seek medical treatment promptly. In older children, the clinical manifestations of concussion are generally similar to those of adults, i.e., transient post-traumatic loss of consciousness, accompanied by active tendon reflexes and hypotonia, etc. Some children may also have persistent headache, vomiting and vertigo after waking up. When concussion occurs in infants and young children, their consciousness disorder may not be obvious, and often there is only a lack of response to external stimuli after trauma, which is manifested as a transient froze, and then the limb movement can be resumed, accompanied by vomiting, lethargy, irritability and other symptoms. If a child develops the above symptoms and is suspected of having a concussion, he or she should consult a doctor for a clear diagnosis of the disease and follow the doctor’s instructions for appropriate treatment.