The desire to vomit after a fall is caused by trauma to the head after a fall, because once the head is subjected to traumatic force, it will show the disorder of brain tissue and nerve function, after the disorder the body’s first reaction is the state of the gastrointestinal tract, forming nausea, vomiting and other reactions, some people will also be accompanied by a slight headache, dizziness, so many people are caused by a transient disorder of nerve function, resulting in nausea Therefore, many people have a transient disorder of nerve function that causes nausea and vomiting. If this is the case, it is recommended that the patient must rest in bed, maintain a calm state of mind, reduce emotional excitement, and provide timely symptomatic treatment. If the patient feels like vomiting very strongly and vomits frequently, he/she should go to the hospital for corresponding examination. The most dangerous condition that needs to be ruled out is nausea and vomiting caused by bleeding in the brain, so it is most important to clarify the condition.