A pressure sensing element with porous structure based flexible base is disclosed in the present invention. The structure includes top and bottom (or left and right) conductive layers and elastomer layer based porous structure. With the flexible characteristic due to a porosity structure design, when a pressure is applied on the pressure sensing element, a larger deformation is generated. Then, through the lager deformation of elastic layer, the resistive or piezoelectric output will be changed more significantly with an applied pressure. Finally, the pressure condition can be obtained through the conversion of a transducer and generates high sensitivity output signal for further intelligent control applications. The complex porous structure can be fabricated by Additive Manufacturing process.