Patients who die of cerebral infarction have significant changes in rhythm and depth of breathing before death, due to cerebral infarction is central nervous system damage, resulting in damage to the respiratory center and central respiratory failure at the end of life. The most common breathing pattern is tidal breathing also known as Chen-Schi breathing, breathing is generally from shallow and slow, gradually deepening and accelerating, reaching a climax and then gradually becoming shallower and slower repeated cycles, and sometimes accompanied by apnea, able to up to 5-30 seconds. The above breathing state is like the tide, so it is called tidal breathing. It is usually seen in various types of massive cerebral infarction death, as well as some other serious intracranial organic diseases. There is also intermittent breathing, which is alternating between breathing and pauses. Intermittent breathing is also a sign of significantly reduced excitability of the respiratory center and is seen in patients with end-stage central respiratory failure.