The invention relates to the field of communication equipment, in particular to an interconnecting structure. The interconnecting structure comprises a metal cavity; a PCB is arranged in the metal cavity and divides the metal cavity into a first cavity and a second cavity; the first cavity is provided with an opening by which a coaxial cable is connected with the PCB electrically; the PCB comprises a first conductor face and a second conductor face; the second cavity is provided with a boss connected with the second cavity; the second conductor face comprises a grounding plane arranged at the corresponding boss and the boss and the grounding plane are coupled in parallel. According to the embodiment of the invention, since the boss and the grounding plane on the second conductor face are coupled in parallel, a device can be grounded through the boss when working; since the PCB is provided with the grounding plane, inner and outer conductors of the coaxial cable both can be connected with the PCB; since the coaxial cable and the PCB are welded together, the stability is enhanced greatly, the service life of the interconnecting structure is prolonged, the PIM timeliness problem can be eliminated, and the working stability of the interconnecting structure can be improved further.