The invention discloses an arm frame for a horizontal rotary jet device. The arm frame comprises a primary arm and a secondary arm, a main beam mounting seat is slidably connected at the bottom of the primary arm, a compensating cylinder is connected between the primary arm and the main beam mounting seat, a power head mounting seat, a centering device and a bi-directional wire rope reel device are fixedly connected on the primary arm, a power head assembly, a centering device assembly and a clamping device are fixedly connected on the secondary arm, an oil pipe reel is connected on the side surface of the secondary arm, a transmission device is arranged at the end of the secondary arm, the main beam mounting seat is fixedly mounted on an outer device, horizontal movement of the primary arm and the secondary arm are controlled through the compensating cylinder, a drill rod mounted on the primary arm is used for drilling hole, and an anchor rod is beaten through the secondary arm. By the aid of a single device, a hole can be drilled, the anchor rod can be beaten, the device cannot be replaced and does not need to integrally be moved, working efficiency is greatly improved, the primary arm and the secondary arm are fixedly connected, operations are achieved by the aid of the same device, construction quality is effectively ensured, and construction period is shortened.