The utility model discloses a sofa assembling and connecting structure, which solves the technical problems that the existing plug pin cannot be interchanged up and down, is difficult to install, is difficult to assemble in place and the like, and comprises a plug pin component and a positioning component. The bolt
assembly comprises a male pin and a female pin; the male pin comprises a male pin main body and an L-shaped guide part to form a U-shaped groove, so that the friction resistance when the male pin and the female pin are combined is reduced, the friction abnormal sound is reduced, and the problems of large friction resistance of a traditional bolt piece and friction abnormal sound of a hardware part are solved; the female pin comprises a female pin body and a plug. The positioning
assembly comprises a positioning baffle and a mounting guide box. Enough assembling gaps are reserved between the male pins and the female pins, so that the soft sofa is more suitable for manual assembling of the soft sofa, precision deviation does not affect assembling in the assembling gaps, the plug pin assemblies are identical in vertical width and thickness and can be interchanged vertically and horizontally, and the problem that traditional plug pin pieces cannot be interchanged vertically is solved. The bolt
assembly is matched with the positioning assembly, so that the whole sofa is convenient to carry, and the mounting flexibility is improved.