The invention relates to an overload protection device for extrusion loads on a connecting rod of a palletizing robot. The device comprises a rocker arm base, a rocker arm and a buffering component, wherein the buffering component is connected to the rocker arm base and the rocker arm. The rocker arm base is provided with a fixed core shaft, the rocker arm is connected to the core shaft in a rotating mode, and the buffering component is located on the reverse rotating path of the rocker arm. According to the device, the rocker arm base and the rocker arm are separated into separated bodies capable of rotating relative to each other, the buffering component is installed on the reverse rotating path of the rocker arm, and therefore when the robot is mis-operated or the rocker arm receives reverse loads, the rocker arm is protected against bending deformation or even damage caused by rigid connection. The device can be applied to the technical field of logistics devices.