The invention discloses an easy-to-clean-and-replace paint roller for interior decoration. The paint roller comprises a Y-shaped frame and a paint brushing roller, wherein a fixing column is mounted on an inner wall of an upper end of the Y-shaped frame, an inner part of the fixing column is provided with a sliding cavity, sliding columns are mounted in the sliding cavity via a pressing spring, anouter end of the sliding column is provided with positioning columns, two ends of the paint brushing roller are provided with positioning holes, the positioning holes are matched with the positioningcolumns, carrier plates are mounted on end parts of the Y-shaped frame, a guide rod is mounted between the carrier plates, a movable seat is mounted on an outer side of the guide rod, a cleaning ringis mounted on a bottom end of the movable seat, and an inner wall of the cleaning ring is provided with a cleaning column. The beneficial effects of the paint roller are that the movable seat moves on an outer side of the guide rod, the cleaning column is driven by the cleaning ring to clean the paint brushing roller, the paint roller is simple and convenient to operate, good cleaning effects canbe achieved, elastic force of the pressing spring is used for pushing the sliding columns to tightly clamp the paint brushing roller, the paint brushing roller is simple and convenient to dismount, and repeated use can be facilitated.