The utility model discloses a chair easy to assemble, which comprises a chair frame, the chair frame comprises a supporting foot stool and a chair surface frame arranged on the supporting foot stool, a seat
cushion is detachably arranged on the chair surface frame, the chair surface frame comprises a transverse rod and a longitudinal rod which are connected with each other, the seat
cushion comprises a seat
cushion body and a limiting cover arranged at the bottom of the seat cushion body, an end cover is formed at the front end of the limiting cover, the limiting cover is arranged on the upper side of the longitudinal rod in a sleeving mode so as to limit the limiting cover in the left-right-lower direction, the end cover is arranged at the front end of the longitudinal rod in a sleeving mode so as to limit the limiting cover in the up-down-left-right-back direction, and finally a small number of screws (at least one screw) are matched for locking. The seat cushion can be fixed and limited in all directions in the upper direction, the lower direction, the
left direction, the right direction, the front direction and the rear direction of the seat frame only by using fewer screws, so that the seat cushion is more convenient and faster to
mount and dismount, and the stability and the safety in use are ensured.