The invention provides a limiting locking device which is used for a wind tunnel test for an all moving airfoil flutter model. The limiting locking device comprises a support component, a clamping component and a brake component, wherein the support component is used for supporting; the clamping component is rotatably connected on the support component, is used for clamping a all moving airfoil to be tested, and can drive the all moving airfoil to rotate relative to the support component, wherein a rotating shaft is in the vertical direction; the brake component comprises a brake rod and a brake slider; the brake rod is fixed below the all moving airfoil; the brake slider is connected with the support component in a sliding way; an empty groove is formed in the brake slider; and the brake rod extends into the empty groove. With the adoption of the limiting locking device provided by the technical scheme, the amplitude of the all moving airfoil can be effectively limited, thus large amplitude can not suddenly occur on the all moving airfoil during test process, and the possibility that the all moving airfoil is damaged is reduced, and the testing safety is improved.