Abstract: The column of cold-formed steel crimped angle composite section possesses cost reduction and high rigidity characteristics, making it suitable for its utilization in high lattice wind turbine towers. Recent research has primarily focused on the material properties of cold-formed steel, with limited attention given to the mechanical behavior of composite columns using cold-formed steel lipped angles. In this study, Element Models (FEM) of composite columns using cold-formed steel lipped angles are developed by ANSYS. The FEM results are validated against test data. Nonlinear analyses of FEM are conducted for specimens under torsional buckling and flexural buckling, respectively. The influence of the number and spaced distance of filler plates on the axial compressive performance of specimens is investigated. A fitting formula for the critical slenderness ratio of composite columns is proposed. Study results indicate that the ultimate capacity of the composite column may decrease even when the spaced distance of the filler plate is approximately 40i. The maximum recommended spaced distance for the filler plate is 32i. The critical slenderness ratio for the composite column is positively correlated with the web width-thickness ratio but negatively correlated with the flange width-thickness ratio. Local buckling may not occur when the slenderness ratio of the composite column is less than 15.