The invention provides an intelligent pressure sensor. The intelligent pressure sensor comprises a sensor body, a butt joint pipe, supporting shafts, a mounting frame, top inserting plates, a blockingand supporting frame, mountain-shaped supports, an inserting frame, a shaft sleeve and a connecting supporting plate. The sensor body is screwed to the middle of the top end of the circumferential outer wall of the butt joint pipe through threads, the two supporting shafts are symmetrically supported in the upper portion of the circumferential outer wall of the butt joint pipe, and each supporting shaft is rotationally sleeved with the mountain-shaped support. When the blocking and supporting frame in two positions and the two mountain-shaped supports are combined, inserted and connected together in a sliding mode, left and right turning side rods of the blocking and supporting frame are attached to the left and right side rods of the mountain-shaped supports in a sliding and inserting manner, a middle long-strip-shaped rail frame sleeves a middle supporting rod of the mountain-shaped support in a sliding mode, the two top inserting plates are pushed by springs to slide downwards rapidly to enable the two inserting rods on the two top inserting plates to be pulled out, the two mountain-shaped supports are located by inserting connection and separated by loosening, and therefore the two mountain-shaped supports can be used flexibly and conveniently in a rotating and combining mode.