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Damage to synaptic plasticity induced by neurotoxicity of amyloid-beta is regarded to be one of the pathological mechanisms of leing and memory disabilities in Alzheimer’s disease patients. This study assumed that the damage of amyloid-beta to leing and memory abilities was strongly associated with the changes in the Fyn/N-methyl-D-aspartate receptor 2B (NR2B) expression. An APP695V7171 transgenic mouse model of Alzheimer’s disease was used and treatment with tetrahydroxy-stilbene glucoside was administered intragas-trically. Results showed that intragastric administration of tetrahydroxy-stilbene glucoside improved the leing and memory abilities of the transgenic mice through increasing NR2B receptors and Fyn expression. It also reversed parameters for synaptic interface structure of gray type I. These ifndings indicate that tetrahydroxy stilbene glucoside has protective effects on the brain, and has prospects for its clinical application to improve the leing and memory abilities and treat Alzheimer’s disease.