The invention provides a system and method for online automatically generating and sharing electronic photo album Apps. The method comprises the steps that 1, App data uploaded by a user are received, wherein the App data comprise photo information; 2, based on prepared App source codes, the App data uploaded by the user are imbedded, a compiling command is executed, and an electronic photo album App installation package is generated; 3, according to a received download command, the electronic photo album App installation package is sent to be shared. The system and method have the advantages that the purpose of online compiling and generating Apps is achieved, and the system enabling the user to define an electronic photo album and share the electronic photo album to platforms such as instant messaging platforms, blogs and short messages through one step is realized; Apps of generated electronic photo albums of IOS, Android, Windows Phone and other versions can be directly downloaded without verification of a third-party application shopping mall.