A touch sensitive processing method comprising: generating sensing information sensed by first electrodes and second electrodes simultaneously as a first and a second set, respectively; according to one or more first touch line pieces corresponding to one or more external objects in the first set, transmitting driving signals via one or more of the first electrodes corresponding to one or more first touch line pieces, and sensing the driving signals via the multiple second electrodes to form one-dimensional sensing information; reserving a part of the one-dimensional sensing information which corresponds to at least one second touch line piece of one or more external objects in the second set to be at least one line piece; composing at least one line piece group according to the line piece; calculating one position of the external object according to the line piece group.