This paper presented the axial compression test on six lipped channels of cold-formed steel. The influence of aspect and slender ratio on static performance was studied by testing four of them. And the other two composite members were considered to prove the improvement of composition effects. The test indicated that aspect and slender ratio, as well as eccentricity were the key factors influencing the plate effects and buckling mode. Composition effects could greatly improve the bearing capacity, and the buckling mode was influenced by various combination forms. Lastly, considering geometry, material nonlinearity and initial defect, this paper created the FEM mode and analyzed the rules after the comparison between the test and FEM, both of them matched each other well.