A method and a system for scanning redundancy files in a mobile device by using cloud computing

The invention provides a method and a system for scanning redundancy files in a mobile device by using cloud computing. The method comprises following steps. A client terminal in a mobile terminal scans a file system in a local mobile terminal and generates a file information list. The client terminal in the mobile terminal submits the file information list to a server terminal. The server terminal compares the received file information list with a file information association list in the database of the server terminal and returns a compared result. The client terminal compares the compared result of the server terminal with an application program list in the mobile terminal and executes cleaning operation based on a compared result of the client terminal. The method has effects of cleaning the redundancy files in the mobile terminal timely and effectively, releasing more storage spaces, and not leaving useless files in the storage space of the mobile terminal, thereby enabling a user to effectively utilize and maintain the storage space resource of the mobile terminal so as to facilitate usage for users.