A container floor assembly, comprising a floor unit, a blocking member and a limiting member, wherein the blocking member is supported on the floor unit, and the limiting member detachably connects the blocking member and the floor unit together in a manner of restricting a relative lateral movement of the blocking member and the floor unit, wherein the blocking member includes a blocking portion and a connection portion, the blocking portion is angularly connected to the connection portion such that both the blocking portion and the connection portion are plates at a right angle, and a reinforcement rib plate is fixed between the blocking portion and the connection portion and the connection portion is supported on the floor unit, and the limiting member forms a lateral limit to the connection portion, characterised in that the floor unit comprises a floor body and a floor chassis, the floor body is mounted on the floor chassis, and the blocking member is supported on the floor body; wherein the floor body is provided with a first insertion hole, the floor chassis is provided with a second insertion hole, the first insertion hole and the second insertion hole are coaxial, the second insertion hole constitutes a limiting hole of the floor unit, or the first insertion hole and the second insertion hole are combined to form the limiting hole of the floor unit, the limiting member is detachable and provided through the first insertion hole and the second insertion hole, and the limiting hole of the floor unit constitutes the limiting structure which forms a lateral limiting to the limiting member, wherein the floor chassis comprises a plurality of spaced bottom beams; and at least one connection member, wherein the connection member is connected between two adjacent bottom beams, a protrusion member protrudes from the connection member toward the floor body, the second insertion hole is provided in the protrusion member, and a bottom end of the limiting member abuts against a hole bottom of the second insertion hole. wherein the blocking member includes a blocking portion and a connection portion, the blocking portion is angularly connected to the connection portion such that both the blocking portion and the connection portion are plates at a right angle, and a reinforcement rib plate is fixed between the blocking portion and the connection portion and the connection portion is supported on the floor unit, and the limiting member forms a lateral limit to the connection portion, characterised in that the floor unit comprises a floor body and a floor chassis, the floor body is mounted on the floor chassis, and the blocking member is supported on the floor body; wherein the floor body is provided with a first insertion hole, the floor chassis is provided with a second insertion hole, the first insertion hole and the second insertion hole are coaxial, the second insertion hole constitutes a limiting hole of the floor unit, or the first insertion hole and the second insertion hole are combined to form the limiting hole of the floor unit, the limiting member is detachable and provided through the first insertion hole and the second insertion hole, and the limiting hole of the floor unit constitutes the limiting structure which forms a lateral limiting to the limiting member, wherein the floor chassis comprises a plurality of spaced bottom beams; and at least one connection member, wherein the connection member is connected between two adjacent bottom beams, a protrusion member protrudes from the connection member toward the floor body, the second insertion hole is provided in the protrusion member, and a bottom end of the limiting member abuts against a hole bottom of the second insertion hole.