中文摘要：

阿尔茨海默病（AD）作为一种慢性神经退行性疾病,严重影响着人类健康,鉴于该病无有效治愈手段,预后差,实现＂三早＂尤为重要。主观认知下降（SCD）作为AD最早期阶段引起国内外学者的重视,但是目前国际上对于该阶段社区筛查工具的选择意见不一。本文对SCD社区筛查工具的应用情况进行总结归纳,以利于一个广泛有效的社区筛查工具的建立。

英文摘要：

As a chronic neurodegenerative disease,Alzheimer＇ s disease（AD） seriously affects the health of human.Since there are no effective means of cure for AD whose prognosis is also poor,the early finding,early diagnosis and early treatment are utmost important.As the earliest stage of AD,subjective cognitive decline（SCD） has caused the attention of scholars all over the world.However,the choices of screening tools for AD are different among the international society.This paper summarizes the application status of screening tool for SCD in the community and tries to help the establishment of a broad and effective screening tool for community.