The invention discloses a method and a device for modifying and managing a video playlist, which enables a user to modify and manage the video playlist more conveniently, wherein the method comprises the steps as follows: receiving video modifying information of the current video playlist; judging whether video duration of the modified video in the current video playlist is changed; modifying the current video playlist and all subsequent video playlists which are associated with playback end time of the current video playlist according to the video modifying information of the current video playlist when the video duration of the modified video in the current video playlist is changed. The method and the device can be used for correspondingly adjusting the subsequent video playlists with continuous play time when the user modifies the current video playlist, and are simple for operating in an adjustment process. The method and the device of the invention improve work efficiency, save working time and improve user experience.