Abstract: The present invention relates to a static compliance performance testing device applied to an industrial robot, comprising a loading direction adjusting component and a loading force adjusting component, wherein the force applying end of the loading direction adjusting component is connected with an end mechanical interface of the industrial robot, and is configured to adjust a force bearing direction of the end mechanical interface. The loading force adjusting component comprises a lever, a first-stage weight and a second-stage weight, the lever is provided with a fixing part and is rotatable around the fixing part, the force bearing end of the loading direction adjusting component is connected with the lever, the first-stage weight is suspended on the lever, the second-stage weight is suspended on the lever and is movable along the lever, the weight of the first-stage weight is larger than the weight of the second-stage weight.