The utility model relates to the technical field of multi-split central air conditioners, in particular to a multi-split central air conditioner auxiliary frame which comprises two concrete foundations, central air conditioner external units, inserting rods, a
cart structure and a limiting structure, the central air conditioner external units are installed on the tops of the two concrete foundations, and the inserting rods are installed on the
cart structure. The bottom of the central air conditioner outdoor unit is fixedly connected with a base, the base is slidably connected with an inserting rod, and a limiting structure is installed on the top of the
cart structure and connected with the inserting rod in a clamped mode. The central air conditioner outdoor unit is provided with the cart structure, the height of the central air conditioner outdoor unit can be adjusted through the cart structure, the central air conditioner outdoor unit can be driven to move, installation of the central air conditioner outdoor unit is facilitated, and installation efficiency is improved. According to the utility model, the limiting structure is arranged, and the
insertion rods with different sizes can be fixed through the limiting structure, so that the applicability is improved, and the
insertion rods are more stable and not easy to shake when lifted and moved.