经典计算机在处理大规模数据集或是高强度计算的时候，受硬件工艺与算法原理限制存在性能瓶颈。为了解决此类问题，人们构想出了用量子计算机通过量子力学的微观性质进行计算。近年来实验技术上的突破使得一些科技公司推出了面向公众的量子计算机，以更深刻地理解量子算法并解决一些实际问题。文章介绍了量子云计算的基本原理和发展现状，并给出了量子云计算应用的成功案例，希望以此引起人们对此领域的关注。

Constrained by transistor-technology and algorithm, the bottleneck effect decreases the performance of classical computer, especially with huge dataset or high performance computing. People proposed quantum computer to solve this problem, by calculating with the principle of quantum mechanics in microscale. Due to the breakthrough in experimental physics, several
technology companies released quantum computers for public, for solving some practical problems as well as understanding quantum algorithms better. In this review article, we introduce the basic concept and development process of cloud quantum computing. Plenty of successful applications of cloud quantum computing are presented, and hopefully these would aroused many attentions and enthusiasm.