A light app offline updating method implemented by a terminal, the light app being an application for presenting web page content by means of a browser kernel with a client-side application manner, the method comprising: respectively setting (101, 201) an offline partition for each light app; acquiring (102, 202), for each light app, key elements of a page corresponding to the light app when network download speed is greater than a preset threshold value, the keys elements being key items emerging on each page; storing (103, 203) key elements of the page as offline data in the corresponding offline partition; acquiring (104, 204) from a server, if a start-up operation of the light app is detected, an offline configuration item corresponding to the light app, the offline configuration item being configured by the server; and processing, according to the offline configuration item, offline data in the offline partition of the light app, characterized in that: the offline configuration item comprises offline data elimination time information and the step of processing, according to the offline configuration item, offline data in the offline partition of the light app comprises: deleting offline data in the offline partition of the light app every time interval corresponding to offline data elimination time information, or the offline configuration item comprises offline data elimination space information and the step of processing, according to the offline configuration item, offline data in the offline partition of the light app comprises: deleting offline data in the offline partition of the light app when offline data in the offline partition of the light app is beyond a data storage capacity corresponding to the offline data elimination space information. respectively setting (101, 201) an offline partition for each light app; acquiring (102, 202), for each light app, key elements of a page corresponding to the light app when network download speed is greater than a preset threshold value, the keys elements being key items emerging on each page; storing (103, 203) key elements of the page as offline data in the corresponding offline partition; acquiring (104, 204) from a server, if a start-up operation of the light app is detected, an offline configuration item corresponding to the light app, the offline configuration item being configured by the server; and processing, according to the offline configuration item, offline data in the offline partition of the light app, characterized in that: the offline configuration item comprises offline data elimination time information and the step of processing, according to the offline configuration item, offline data in the offline partition of the light app comprises: deleting offline data in the offline partition of the light app every time interval corresponding to offline data elimination time information, or the offline configuration item comprises offline data elimination space information and the step of processing, according to the offline configuration item, offline data in the offline partition of the light app comprises: deleting offline data in the offline partition of the light app when offline data in the offline partition of the light app is beyond a data storage capacity corresponding to the offline data elimination space information. the offline configuration item comprises offline data elimination time information and the step of processing, according to the offline configuration item, offline data in the offline partition of the light app comprises: deleting offline data in the offline partition of the light app every time interval corresponding to offline data elimination time information, or the offline configuration item comprises offline data elimination space information and the step of processing, according to the offline configuration item, offline data in the offline partition of the light app comprises: deleting offline data in the offline partition of the light app when offline data in the offline partition of the light app is beyond a data storage capacity corresponding to the offline data elimination space information.