A touch input method and an electronic apparatus thereof are provided. The touch input method is adapted to a touch module for controlling a pointer on a virtual display screen. The touch input method includes the following steps. Detecting the touch module, and a first input position and a second input position are detected during a detecting period, wherein the first input position is corresponding to a first input signal, and the second input position is corresponding to a second input signal. A command is formed by the first input signal and the second input signal jointly, and the pointer executes a specific function following the command.