Abstract: The finite strip program of CUFSM was used to calculate the elastic buckling stress of channel flexural members with ordinary edge stiffeners and channel flexural members with stiffeners in the compression flange. It is found that adding stiffening ribs in different positions of the compression flange will make the average of elastic local buckling stress of channels with ordinary edge stiffeners increase 53.09%, and make the average of elastic distortional buckling stress increase 7.39%. But the elastic distortional buckling stress of the flexural members increased little when the stiffening ribs in the flange near the edge stiffeners. Overall, adding stiffening ribs in the middle of the compression flange is the best plan to increase the stability behavior of the flexural members.