The invention provides a network played content-customizing method, which includes the following steps: building a unified interface for a plurality of different played content sources; according to played contents selected by a user, obtaining the information of the played contents from the different played content sources via the unified interface, the content information including live video, live audio, video on demand, and audio on demand; according to the information of the obtained played contents, determining the locations of the played contents in a content playlist, forming a content playlist view in the timer shaft form, supplying for the user to customize individual played contents, according to the customized content playlist of the user, and a single network player calling the content in the corresponding content source to play through the unified interface. The invention also provides a network played content-customizing device. According to the invention, content information coming from different resources can be mixed in the same content playlist, so that the user can customize, mix and play network radio stations with various types of contents alone.