The embodiment of the invention discloses a picture data sending method and device and a mobile terminal. The method includes the steps of receiving first input of a display interface with multiple picture input controls; responding to the first input, wherein the first input is used for inputting picture data into a selected picture input control; receiving second input from a user; responding tothe second input, wherein the second input is used for obtaining and displaying an application matched with a typesetting style of the display interface; sending the picture data and the typesettingstyle to a target side through the application. By utilizing the embodiment, more convenience can be provided for the user to carry out sharing or uploading or saving and other network operations on different pieces of picture data, and therefore the sending process of the picture data can be achieved without taking pictures at first and then selecting the pictures from a photograph album application for network operations and other frequent processing procedures, so that the efficiency of sending the picture data is improved.