Cloud computing service is a kind of service in which various resources of IT are rented as much as they are needed for use, and paid as much as they are used. Cloud computing service has become a hot business trend in recent years. But cloud computing is not an invented technology which is newly, it is a discovered technology from established IT technologies. No one can describe exactly how the future life will be exchanged by cloud computing service. Anyway Cloud computing has the pontential to transform a large part of our life. Korea Communications Commission prepared legislative notice and a public hearing was conducted by a single law with respect to the cloud computing service. This article is to discuss the bill surrounding cloud computing service recently to be enacted. Cloud computing on the technical aspects of the approach and discuss has been significant progress, but discussion about the legal aspects of the service element is short. Our goal in this article intends to give a general overview on the bill surrounding cloud service and to give a detailed analysis. Legal issue on the cloud computing occurs in many fields. Existing laws have limits to govern cloud computing service. Cloud computing has issues-Privacy, Security and so on. Observance of korea Personal Information Protection Act is required of everyone. but legislator made the law did know cloud computing. “Promotion of Information&Communications and Personal Information Protection Act” assort Enterprises in Information & Telecommunication Industries into three groups-common carrier, special category telecommunications service provider, value added common carrier. cloud computing service provider is a value added common carrier in Information&Communications Act, but this is problem. The meaning of cloud computing is ambiguous. Cloud computing definitions vary, but our definition is as follows. Cloud computing provides flexible, location independent access to computing resources that are quickly and seamlessly allocated or released in response to demand. Cloud Computing technology and Cloud Service must be distinguished. The contents above are accepted by the bill surrounding cloud service. This paper argued the main contents of the bill surrounding cloud computing service and analyzed about the challenges that need to be discussed further.