4项科学任务：拍摄三维立体月球地形图,探测月球上特殊元素的分布,评估月壤厚度和氦-3的储量,摸清距离地球40万公里的空间环境.
5项工程目标：研制和发射中国第一颗探月卫星,初步掌握绕月探测基本技术,开展首次月球科学探测,初步构建月球探测航天工程系统,为月球探测后续工程积累经验.
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