The invention discloses a material mechanical property parameter determination method based on a bending technology. The method comprises the steps that mechanical models which are used for predictingV-shaped bends containing including different material parameters are established, bending moment computation models are established for two constitutive models voce and ludwik, an optimization algorithm based on determined mechanical analysis model materials is established, and the method includes but is not limited to target function constructing, quadratic approximation objective function constructing, target good function minimum value resolving and the like. The method has the advantages that the process of obtaining material parameters is greatly simplified to prevent problems caused byerrors, macro mechanical property parameters of materials of a shaping technology similar to three-point bending can be obtained using practically measuring mechanical performance in an actual production technology, the equipment cost and testing cost of a material testing machine are not needed, and therefore the production efficiency of products can be greatly improved.