A rearview mirror rod connecting structure, both ends of the mirror rod are rotatably connected with a connecting rod and a seat rod, the top of the mirror rod is provided with a connecting through hole, one end of the connecting rod is provided with a ball head, and a limiting block and a positioning block provided with a spherical surface are further provided; the positioning block is sleeved on the connecting rod, then the connecting rod is passed through the connecting through hole, the ball head is left in the connecting through hole, the limiting block is fixed at the other end of the connecting through hole, so that the connecting rod can rotate relative to the mirror rod through the ball head; the bottom end of the mirror rod and the seat rod are connected through the relatively arranged rotating plate and connecting plate, and are rotatably connected by using bolts, nuts, gaskets and plastic rings. The rearview mirror rod connecting structure has simple structure, less required parts, and extremely simple and fast assembling and disassembling operation, so that the rearview mirror can be conveniently adjusted, the assembling and disassembling convenience is improved, and the production and maintenance costs are effectively reduced.