To provide a wind power generation system by utilizing vehicle wind power generated during traveling on a road or an expressway.

In a wind turbine impeller assembling system for wind power generation comprising a wind turbine impeller system 1, a vertical air flow control plate system 2, a horizontal air flow control plate device 3 and a support stand 4, the wind turbine impeller system 1 is composed of a vertical rotary shaft 11, a rotary impeller holding means 12 and a plurality of rotary impeller blades 13. The vertical air flow control plate system 2 keeps three longitudinal plate-like bodies of a right outside longitudinal plate 21, a central vertical plate 22 and a left outside longitudinal plate 23 at almost regular intervals. The horizontal air flow control plate device 3 is formed of three plate-like bodies, an upper, middle and lower plate like bodies. The upper plate 31 warps upward on an air flow intake port side B. The lower plate 33 warps downward on air flow intake port side C. By this, air flows from air flow inlets B, C can be easily taken in.