A window moving method of a mobile device and system thereof is provided and includes receiving a message that a display screen of the mobile device is touched; obtaining the area of a touched point on the display screen; judging whether the area of the touched point is not smaller than a preset value and, if so, obtaining the current coordinates of the touched point; and moving the window to a location corresponding to the current coordinates of the touched point. According to the method, it is determined that the operation of pressing the display screen is not a traditional operation of clicking an icon; it is determined that the operation of pressing the display screen is an operation of moving a window; and finally the window is moved to the location corresponding to the current coordinates of the touched point.