The invention provides a torsion warning device, belonging to the field of tools and warning devices, and the device is used for solving the problem that the traditional torsion tool is not suitable for immediately supplying the size of torsion identified by a user under any operation condition. The torsion warning device comprises a torsion base, a stirring element, a stopping element, a force-limiting spring and an assembling sleeve, wherein the assembling sleeve is used for positioning an assembled element and can rotate relative to the torsion base; the stirring element is arranged in thetorsion base and is connected to the assembling sleeve; the force-limiting spring is arranged between the torsion base and the stopping element; the stopping element is used for stopping the stirringelement under the elastic action of the force-limiting spring; and when the assembling sleeve is pressed by a torsion which is bigger than the elastic force of the force-limiting spring, the assembling sleeve can be used for driving the stirring element to pass by the stopping element. The torsion warning device is transferred onto a fixture by using a torsion tool, thereby thoroughly solving theproblem of inconvenient influence which is caused by a wrench having the torsion warning device and realizing the accurate positioning for a compelled force path by using a common wrench.