Sudden cerebral infarction refers to the acute phase of cerebral infarction, which is the most common acute disease in neurology, with an acute phase mortality rate of about 5%-15%. There are many reasons for patients to die in the acute phase of cerebral infarction, because patients are elderly, mostly over 60-65 years old, and often have a variety of underlying diseases in the body itself, such as hypertension, diabetes, hyperlipidemia, or there are also organ insufficiencies, such as liver insufficiency, renal insufficiency, heart disease, chronic respiratory failure, etc. In the acute phase, there are also various complications that can easily occur and cause death, such as patients with swallowing difficulties, which can easily cause misaspiration and in severe cases, directly lead to asphyxia and death. Less severe ones can cause aspiration pneumonia, which leads to patients having fever, lung infection, and also respiratory failure. In addition, there is often a combination of hypoproteinemia, electrolyte metabolism disorders, and stress ulcers, all of which can lead to a shorter life expectancy and an increased risk of death.