6. A mobile terminal, comprising: a candidate word box creating and initializing module, an input sensing module, a position managing and analyzing module, a candidate word box destroying module and a candidate word box drawing module; wherein the candidate word box creating and initializing module is configured to create a candidate word box; the candidate word box drawing module is configured to draw the candidate word box, and redraw a candidate word box after the candidate word box is destroyed in situ and moved to a new position; the input sensing module is configured to receive an input signal generated through directly dragging the candidate word box by a user or through operating a direction key or a direction soft key by the user to move the candidate word box; and start the position managing and analyzing module and the candidate word box destroying module; the position managing and analyzing module is configured, when the moving distance is not beyond a range of a screen, to analyze and calculate a moving distance, and notify the candidate word box drawing module, and when the moving distance is beyond the range of the screen, to record a distance between an initial position of the candidate word box and an edge of the screen in the direction as the moving distance and generate the position information, and notify the candidate word box drawing module; and the position managing and analyzing module is further configured to, when the input signals are generated by direct dragging of the user, calculate the moving distances of the candidate word box in the horizontal and vertical directions according to a difference between a horizontal coordinate value of the initial position before dragging and a horizontal coordinate value of the initial position after dragging and a difference between a vertical coordinate value of the initial position before dragging and a vertical coordinate value of the initial position after dragging, and respectively multiply a horizontal moving distance and a vertical moving distance by a conversion coefficient to slow down a moving speed during the dragging and obtain the moving distances of the candidate word box; and the candidate word box destroying module is configured to destroy the candidate word box in situ, wherein the candidate word box creating and initializing module is further configured to, when creating the candidate word box, generate position information and notify the candidate word box drawing module; the candidate word box drawing module is further configured to draw the candidate word box in a target position according to the position information; and the position managing and analyzing module is further configured to obtain the position information when analyzing and calculating the moving distance, wherein the position managing and analyzing module is further configured to, when the input signals are generated through operating the direction keys or direction soft keys to move the candidate word box, record the pressed direction keys and a number of times of pressing the direction keys, and calculate the moving distance according to the number of times of pressing the direction keys; and record initial position information of the input signals when effective input signals are generated by direct dragging of the user, and calculate the moving distances in the horizontal and vertical directions according to the initial position information.
6. A mobile terminal, comprising: a candidate word box creating and initializing module, an input sensing module, a position managing and analyzing module, a candidate word box destroying module and a candidate word box drawing module; wherein the candidate word box creating and initializing module is configured to create a candidate word box; the candidate word box drawing module is configured to draw the candidate word box, and redraw a candidate word box after the candidate word box is destroyed in situ and moved to a new position; the input sensing module is configured to receive an input signal generated through directly dragging the candidate word box by a user or through operating a direction key or a direction soft key by the user to move the candidate word box; and start the position managing and analyzing module and the candidate word box destroying module; the position managing and analyzing module is configured, when the moving distance is not beyond a range of a screen, to analyze and calculate a moving distance, and notify the candidate word box drawing module, and when the moving distance is beyond the range of the screen, to record a distance between an initial position of the candidate word box and an edge of the screen in the direction as the moving distance and generate the position information, and notify the candidate word box drawing module; and the position managing and analyzing module is further configured to, when the input signals are generated by direct dragging of the user, calculate the moving distances of the candidate word box in the horizontal and vertical directions according to a difference between a horizontal coordinate value of the initial position before dragging and a horizontal coordinate value of the initial position after dragging and a difference between a vertical coordinate value of the initial position before dragging and a vertical coordinate value of the initial position after dragging, and respectively multiply a horizontal moving distance and a vertical moving distance by a conversion coefficient to slow down a moving speed during the dragging and obtain the moving distances of the candidate word box; and the candidate word box destroying module is configured to destroy the candidate word box in situ, wherein the candidate word box creating and initializing module is further configured to, when creating the candidate word box, generate position information and notify the candidate word box drawing module; the candidate word box drawing module is further configured to draw the candidate word box in a target position according to the position information; and the position managing and analyzing module is further configured to obtain the position information when analyzing and calculating the moving distance, wherein the position managing and analyzing module is further configured to, when the input signals are generated through operating the direction keys or direction soft keys to move the candidate word box, record the pressed direction keys and a number of times of pressing the direction keys, and calculate the moving distance according to the number of times of pressing the direction keys; and record initial position information of the input signals when effective input signals are generated by direct dragging of the user, and calculate the moving distances in the horizontal and vertical directions according to the initial position information. 7. The mobile terminal according to claim 6 , wherein the candidate word box creating and initializing module is further configured to, when creating the initial candidate word box, create the candidate word box in an area of a previous line of a current edited text or in an area of a next line of a current edited text, and preset a step length each time when operating the direction key or direction soft key once.