How long you can live with cerebral infarction in your 70s depends on the size of the infarction and the site of the infarction. Some will affect the life expectancy and some will not, as follows: 1, affect the life expectancy: If it is a large cerebral infarction, the condition is generally heavy, and the patient may develop high cranial pressure, causing brain herniation in severe cases, which can lead to the death of the patient, which can occur within the acute period of the onset, such as within 1-2 weeks of the onset, or may die from complications, such as death from lung infection, urinary tract infection, lower limb deep vein Pulmonary embolism caused by thrombosis can occur within two weeks or longer after the onset of complications.2. Does not affect life expectancy: If it is a small cerebral infarction, after active and correct treatment, it may be clinically cured, or there may be sequelae, which generally does not affect the life expectancy of patients. Patients generally belong to the recovery period one year after the onset, and the shorter the time from the onset, the better the recovery effect, and timely treatment should be carried out at an early stage after the onset.