Abstract: A cloud service system includes a server and a first cloud service platform. The server stores a service program. The first cloud service platform is in communication with the server and includes a first service index, a first communication control processing module, a first temporary data storage module and a first registration module. When a client device requests the first cloud service platform for a service, the first communication control processing module determines whether the first temporary data storage module stores the service program, and if the first temporary data storage module does not store the service program, the first communication control processing module obtains the service program from the server by using a first link path preset in the first service index, executes the service program obtained from the server for providing a cloud service to the client device, and stores the service program into the first temporary data storage module.