Steering device of blades of window curtain

Provided is a steering device of blades of a window curtain. Convex blocks with different widths are respectively arranged on the inner faces of two opposite side walls of a fixed seat, a matched shaft sleeve is combined with the fixed seat in a rotatable mode, two stopping faces are arranged on the end face of one side of the shaft sleeve, the stopping faces can contact different convex blocks, and the shaft sleeve is enabled to obtain different and fixed rotating stroke due to change of assembly directions. The steering device of the blades of the window curtain is suitable for window curtain structures with window curtain blades in different widths, the using effect that the swing of the controlled window curtain blades can completely shield light or enable light to enter is guaranteed, and the problem that the blades of the window curtain are deformed or damaged due to excessive rotation of the shaft sleeve is avoided.