A mild concussion from being hit by a car can be treated with general therapy, sedative medication to regulate autonomic function, antiemetic therapy, and pain management. When a concussion is a transient brain dysfunction that occurs immediately after a blow to the head from an external force. 1. General treatment: pay attention to rest, generally bed rest for 5~7 days. Avoid external adverse stimuli and reduce brain activities. Pay attention to psychological adjustment and treatment to eliminate the patient’s concern and fear of concussion. 2. Sedative drug therapy to regulate autonomic function: for autonomic dysfunction, vitamin supplementation can be given. Glutathione can improve autonomic dysfunction, and vitamin B can help to protect nerve tissue cells. 3. Antiemetic therapy: Intramuscular metoclopramide can be used to treat vomiting due to mild concussion. 4. Analgesic treatment: For headaches caused by mild concussion, pain relievers such as celecoxib can be used to relieve the headache. Patients with mild concussion should take rest to avoid deterioration of the condition.