The metabolic rate of glucose in different parts of the cerebral cortex of normal people is not completely consistent. The utilization rate of F-FDG in frontal lobe and occipital lobe is slightly higher than that in parietal lobe and temporal lobe, while that in left temporal lobe is slightly lower than that in right temporal lobe. With the increase of age, the metabolic rate of glucose in all parts of the cerebral cortex of normal people decreased, especially in the frontal lobe, but the basal ganglia, visual cortex, hippocampus and zonular gyrus remained basically unchanged. The radioactivity of gray matter is obviously higher than that of white matter, and the distribution of radioactivity in each leaf of gray matter is basically symmetrical. The occipital visual cortex has the highest uptake of F-FDG, and the caudate nucleus, lenticular nucleus and thalamus are obviously developed. The utilization rate of F-FDG is slightly higher than that of parietal lobe and temporal lobe, and the left temporal lobe is slightly lower than that of the right temporal lobe. With the increase of age, the metabolic rate of glucose in all parts of the cerebral cortex of normal people decreased, especially in the frontal lobe, but the basal ganglia, visual cortex, hippocampus and zonular gyrus remained basically unchanged. The radioactivity of gray matter is obviously higher than that of white matter, and the distribution of radioactivity in each leaf of gray matter is basically symmetrical. The occipital visual cortex has the highest uptake of F-FDG, and the caudate nucleus, lenticular nucleus and thalamus are obviously developed.