The invention discloses a bearing seat convenient to dismount and mount. The bearing seat comprises a bearing seat base, a bearing seat body, an inner ring and fixing holes. The bearing seat body is arranged at the top of the bearing seat base, and the fixing holes are formed in the two sides of the bearing seat body and the two sides of the top of the bearing seat base correspondingly. The innerring is arranged in the middle of the bearing seat body, and the beating seat body is constituted by a left clamping ring and a right clamping ring. A first clamping groove is formed in the side edgeof the top of the left clamping ring, and a second clamping groove is formed in the position, located on the other side edge of the same side as the first clamping groove, of the side edge of the topof the right clamping ring. A gasket is arranged between the inner side of the bearing seat body and the outer side of the inner ring, and a bottom plate is arranged at the top of the gasket. The bearing seat has the beneficial effects that the replacing time is greatly saved, the procedure and difficulty of bearing replacing are reduced, the working efficiency is improved, damage of previous replacing to a bearing or the gasket is avoided, and the service life of the bearing seat is prolonged accordingly.