Armchair

The utility model discloses an armchair which comprises a backrest, cylindrical armrests, a chair frame and insert tenons, wherein the backrest is fixed on the chair frame through in a mortise-and-tenon connection way; round holes are formed at the front ends of the backrest; axial through grooves are formed in the round holes along the circumferential directions at equal distance; the tops of the axial through grooves extend along the circumferential directions of the round holes to form annular grooves; the outer diameters of the armrests are matched with the round holes; convex blocks are arranged on the tops of the armrests along the circumferential directions of the armrests at equal intervals; the convex blocks are matched with the axial through grooves; the annular grooves are as large as the convex blocks; the insert tenons are matched with the axial through grooves; due to adoption of the connection mode of the novel structure, the armrests are firmly fixed on the backrest without glue for fixing and