Connecting component with tenon-and-mortise connection

The utility model provides a connecting member with mortise and tenon joint, which comprises a transverse member, a longitudinal member and a bearing member, the transverse member is of a rectangular structure, the interior of the transverse member is hollow, the outer end of the transverse member is provided with a thin-wall part, four corners of the top end of the bearing member are all provided with fixing parts protruding outwards, and a mortise joint part is formed between every two adjacent fixing parts. The joggling parts comprise the first joggling part and the second joggling part, a first mortise groove is formed in the end, corresponding to the inserting end of the bearing component, of the transverse component, the transverse component is installed on the first joggling part through the first mortise groove, a second mortise groove is formed in the end, corresponding to the inserting end of the bearing component, of the longitudinal component, and the second mortise groove is installed on the seco