Cerebral hypoxia refers to the lack of oxygen supply to the brain caused by various reasons, which cannot reach the minimum level of brain tissue metabolism, and there are different degrees of brain dysfunction. The causes of cerebral hypoxic convulsions are mainly brain cell metabolic disorders, vascular inability to normal contraction and diastole. 1, brain cell metabolic disorders: cells in the state of ischemia and hypoxia will lead to ATPase dysfunction, affecting the stability of the inner and outer cell membranes, and will also cause lesions in the cell membrane ion channels, sodium ion transfer to the outside of the cell, the cell is in an internal negative and external positive state, brain cell metabolic disorders appear abnormal discharge. Discharge causes limb convulsions; 2. Vascular inability to normal contraction and diastole: cerebral vascular autoregulation function is lost when the brain is hypoxic, and it cannot effectively contract and diastole normally, which leads to reduced cerebral blood flow and restricted microcirculatory perfusion, resulting in cerebral intracellular edema or vasogenic cerebral edema. The lesions are often located in the distal cortical branches of the blood vessels, leading to dysfunction of neuronal cells in the cerebral cortex and causing the occurrence of convulsions in the body.