Cerebral infarction onset delayed for three days still have the possibility of recovery, but compared with the early treatment to achieve the recovery effect to reduce some, the cure rate is relatively low, specifically with the onset of the situation and the progress of the disease. 1. Morbidity: if the onset of cerebral infarction is delayed for 3 days, if the scope of the disease is small and no large area of cerebral infarction occurs, then the patient still has the possibility of recovery after treatment. 2. Progress of the disease: if the disease develops quickly, and the condition deteriorates rapidly after a delay of 3 days, and irreversible damage to brain cells and nerves occurs, then the hope of recovery is relatively small. In the early stage of cerebral infarction, many patients can achieve better therapeutic effect through intravenous thrombolysis and surgical thrombolysis. Once missed, it will greatly increase the difficulty of treatment and the probability of sequelae. Therefore, patients should pay close attention to their physical condition, and if they have symptoms of cerebral infarction, they should not delay and choose the hospital for consultation at the first time, so that the condition can be controlled and the probability of after-effects of cerebral infarction can be minimized.