The invention relates to the field of sitting tools, in particular to an environmental-protection barstool which comprises a barstool top, barstool legs and a barstool backrest arranged on the barstool top. The environmental-protection barstool is characterized in that the barstool top, the barstool legs and the barstool backrest are made of metal; each barstool leg comprises a connection segment located at the top and used for being connected with the barstool top, an anti-folding reinforcing segment located in the middle and a supporting pillar segment located at the bottom; the middle-upper portion of each barstool leg is provided with a sheet metal which is formed by stamping, and the cross section of each sheet metal is in an arc shape which is arched outwards; each anti-folding reinforcing segment is provided with a reverse force-bearing reinforcing groove rib which is formed in the mode that a sheet metal body is inwards sunken, connection pieces are further arranged between every two barstool legs, each supporting pillar segment comprises a pillar sleeve formed by encircling of the corresponding sheet metal and a hard plastic supporting foot arranged in the corresponding pillar sleeve in a filled mode, the bottom end of each plastic supporting foot stretches out of the corresponding pillar sleeve, and the joints of the reverse force-bearing reinforcing groove ribs and the sheet metal are force-resistant folding edges. The environmental-protection barstool is convenient to machine, small in material consumption, capable of being recycled, easy to repair and capable of saving energy and protecting the environment.