The disclosure relates to a touch screen terminal and a method for locating an electronic document thereof. The touch screen terminal comprises a setting module, a directory listing module, a detection module, a mode switching module, a real-time directory module, a preview module and a chapter/section switching module. The method comprises: generating a directory listing for an electronic document and storing it; detecting a screen aaaaaaaaaaaaaaa in a reading mode of current chapter/section of the electronic document; when it is detected that a user enables a chapter/section switching function, enabling a chapter/section switching mode to wait for the user to input a number of the chapter/section to switch to; when it is detected that the user inputs the number of the chapter/section to switch to, matching a directory entry in real time from the stored directory listing and displaying it; generating a preview for a corresponding chapter/section according to the number of the chapter/section to switch to input by the user and displaying it to the user; and when a confirmation of the switching operation is detected, switching to the previewed chapter/section. The disclosure is simple to operate and easy to implement, and improves the reading experience.