A pressure sensing array includes a plurality of pressure sensing units and a control unit. Each of the pressure sensing units includes a plurality of first electrode blocks and a plurality of second electrode blocks. The second electrode blocks are arranged in a staggered manner along a first direction or a second direction, in which the first direction is substantially perpendicular to the second direction. The control unit is coupled to the pressure sensing units and used for controlling the first electrode blocks and the second electrode blocks of the each of the pressure sensing units to be turned on or off respectively.