Abstract: The normalization of relationship between stress and strain of gallet, reinforced or not, is not as good as that of soil. The lower the around pressure and the harder the stone, the more scattering the test points in cartesian system. In orthogonal system, according to the scattering points and the magnitude of around pressure, gallet, reinforced or not, can be normalized into two lines which can be used to determine the stress-strain relationship. Comparing with the test curves, the result shows that the points of reinforced gallet are more concentrated than those of unreinforced gallet.Finally,a anew constitutive equation related to the normalization is proposed to calculate the tangential shear modulus of gallet.The parameters which can be directly determined by tri-axial test in the equation are also demonstrated.