Acute ischemic stroke (AIS) is a serious threat to human health. Treatment in time window is very important for this disease. Traditional models often miss the best treatment time due to the delay in pre hospital time and the delayed CT examination after admission. The emergence of the mobile stroke unit makes the treatment time greatly shortened, the patients can be treated in the first aid vehicle equipped with head CT, which saves time for the next treatment in the hospital, and improves the treatment rate of AIS patients and reduces the rate of disability.