The present invention relates to a smart stent using triboelectricity, and it is possible to obtain triboelectricity from the TENG attached to the stent by using interlocking, segmental movement or microscopic vibrations generated in blood vessels in the large intestine. It is intended to solve the problem of measuring blood pressure and pressure in the body by attaching a pressure sensor to the existing stent by driving the sensor to measure blood pressure and pressure in the body outside the body. That is, the present invention, a stent made of a cylindrical shape to be attached to blood vessels and intestinal walls in a stent, a biocompatible coating to prevent foreign substances from contacting TENG, a thickness of 1 mm to generate frictional electricity by contact with Graphene PDMS Aluminum metal fabricated down, the inner wall of the blood vessel inside the body, the pressure sensor attached to the stent to measure the pressure in the body by the frictional electricity of the generated TENG, and the DC current rectified by the Wheatstone bridge can be stored. A capacitor attached to the circuit, a Wheatstone bridge attached to the circuit to convert the alternating current generated in TENG into a DC current, and a contact with metal to generate friction electricity. Sylgard184A and Sylgard184B solutions are mixed with 10:1 to produce PDMS. After making the PDMS, 2 wt% of graphene powder was added before the PDMS hardened, mixed for 5 minutes at 2000 rpm in a centrifuge, and then air bubbles were removed at 21 kpa for 1 hour using a vacuum oven, and heated at 70 degrees for 2 hours to harden and softened A graphene PDMS is composed of surface roughness using sandpaper in the process of hardening to increase the amount of friction electricity generated by increasing the contact surface with metal. Accordingly, the present invention can obtain triboelectricity from the TENG attached to the stent by powering the interlocking, segmental movement or microscopic vi
