As the function of strain, the second derivatives of free energy to strain form a matrix, of which the eigenvalues are directly related with elastic properties. By adjusting temperature, pressure and shape change properly, those eigenvalues can increase, or become non-zero from the initial zero value, which thus inhibit the occurance of martensitic phase transformation. Meanwhile, elastic constants increase and many elastic properties are strengthened, therefore, the elasticity and safety of glass is improved. In summary, we can expect that the smash danger of glass will be reduced greatly due to this anti-martensitic phase transformation.