The performance of distortional-local interactive buckling on stiffening lipped angle steel members under axial compression is studied in the thesis by using ANSYS finite element software. The effect of different edge width on buckling mode and critical load and the effect of different panel thickness on distortional-local interactive buckling critical load are studied. The results indicate that: Edge width has great effects on distortional-local interactive buckling mode and critical load of the component. The critical load value under different edge width is contrasted to get a reasonable edge width and limb length ratio range; the panel thickness has great effects on the critical load of distortional-local interactive buckling. The change of economic coefficient under different panel thickness is contrasted to get a reasonable panel thickness and limb length ratio range.