The invention relates to the technical field of buildings, and provides a connecting joint of a reinforced concrete beam and a concrete filled steel tubular column, comprising the reinforced concretebeam, the concrete filled steel tubular column, an I-shaped steel bracket and two T-shaped steel connecting plates arranged on the upper surface and the lower surface of the I-shaped steel bracket respectively, the reinforced concrete beam comprises longitudinal stress ribs, the longitudinal stress ribs are arranged at positions of the two T-shaped steel connecting plates, and at least one row oflongitudinal stress ribs are arranged at each position; and one side of the I-shaped steel bracket is mounted on the concrete filled steel tubular column. According to the connecting joint of the reinforced concrete beam and the concrete filled steel tubular column, the I-shaped steel bracket and the T-shaped steel connecting plates are used for connection, not only are the problems of staggered collection of beam longitudinal bars, ring beam stirrups, annular stiffening plates and the like at joints, difficult steel bar binding, incompact concrete pouring and the like effectively solved, butalso holes are prevented from being formed in the concrete filled steel tubular column, and the problem of connection of a second row of steel bars when two rows of steel bars exist at the joints is perfectly solved.