The invention provides a wind powered spiral type mute fan blade. The wind powered spiral type mute fan blade comprises a fan blade shaft, and is characterized in that a plurality of fan blade installation positions are evenly distributed on the circumference of the fan blade shaft, roots of a plurality of fan blades are fixedly installed on the fan blade installation positions, an intersecting line is formed by a tangent plane vertical to the axis of the fan blade shaft and each fan blade, the intersecting lines are spiral lines, an intersection line is formed by a tangent plane including the axis of the fan blade shaft and a portion of each fan blade, except the root of each fan blade, an intersection angle between each intersection line and the axis of the fan blade shaft is an acute angle, a support shaft is arranged between every two adjacent fan blades, and two ends of each support shaft are respectively fixedly arranged on the surfaces of the fan blades, adjacent to each support shaft. The wind powered spiral type mute fan blade uses the spiral fan blades, increases the area of a wind power contact surface through the spiral curves on the premise of not increasing the radial length of the fan blades, reduces a wind power starting load, reduces requirements for starting wind velocity, improves stability of the fan blades, reduces wind dryness, and reduces noise influences by adding the support shafts in the spiral fan blades.