To effective use of wind energy resources in low wind region, the "vertical axis-building block-pressure type" blade is developed. Firstly, a large rectangular frame is designed in order to form a slice of whole blades; Secondly, several small units which can turn freely around the shaft are installed on the whole blades; Finally, the two pieces of the overall blades are made of a pair of big blade and it is installed in the axis of wind turbine, which is symmetrical of left and right sides. While working, wind energy would press vertically a whole blade to get moving torque and drive the generator to power. To verify the design results, this article made a small physical device and tested under different wind speed. The results showed that the device started low wind speed performance was good and operation was stable and reliable.