Angular gyrus damage refers to four symptom clusters, including finger loss, inability to calculate, inability to write, and left-right disorientation. Angular gyrus impairment is a lesion of the parietal and temporal gyrus of the main hemisphere, and occlusion of the posterior parietal or angular gyrus artery is common. It can also be seen in brain tumors, traumatic brain injury, brain atrophy, alcoholism, carbon monoxide poisoning, various psychiatric disorders, and hypnotic states. The contraindicated diet for patients with angular gyrus damage is as follows. 1, avoid blindly supplement calcium: calcium is an important raw material for the composition of the bones, some people think that after traumatic brain injury more calcium can accelerate the healing of broken bones. 2, avoid eating more meat and bones: some people think that eating more meat and bones can make the fracture heal early, but the bones are contraindicated in the diet of patients with traumatic brain injury. 3, avoid partial diet: patients are often accompanied by local edema, congestion, bleeding, muscle tissue damage, etc., and the body repair tissue is the key to smooth healing is nutrition. 4, avoid indigestible things: traumatic brain injury patients are forbidden to eat yams, taro, glutinous rice and other easily flatulent or indigestible food. 5, avoid over-eating white sugar: a large intake of white sugar will cause the rapid metabolism of glucose, which produces intermediate substances of metabolism, such as pyruvate, lactic acid, etc., so that the body is acidic poisoning state.