The invention discloses a stainless steel three-layer multipurpose pot which comprises a pot body, wherein three installing holes are formed in the side edge of the pot body; the pot body is connectedwith a main handle through the installing holes; the main handle comprises a handlebar, a connecting steel plate, installing slotted holes, fixing studs and fastening screw nuts; the connecting steelplate is arranged at the front end of the handlebar; the installing slotted holes are formed in the connecting steel plate; and the fixing studs pass through the installing holes and the installing slotted holes to be connected with the installing slotted holes. The stainless steel three-layer multipurpose pot has the advantages that the installation is convenient and fast; the fixing performanceis good; through the arrangement of a sealing ring, the stability of a connecting part is reinforced; meanwhile, the sealing performance is improved; the stability of the pot is improved; the anti-oxidization performance of the pot body is improved; the fireproof performance of the pot body is ensured; the service life is prolonged; through the polytetrafluoroethylene, the anti-adhesion effect ofthe pot body is ensured; a plurality of arc-shaped grooves are formed in the bottom surface, so that the heat transfer performance is improved; and the heat transfer is more uniform.