Abstract: A data management system includes a database storing a plurality of data and a management platform linked to the database. The management platform contains a data list corresponding to the data and a connection unit linked to the data list and the corresponding data. Users link an electronic device to the management platform via the internet to process the data. The electronic device outputs an execution signal to the management platform to process the data in the database through the connection unit. Thus the users do not need to download the data to the electronic device and can directly execute online to save storage space of the electronic device and required time of downloading.