Novel stirring paddle, stirring paddle system suitable for high-viscosity material fermentation and fermentation method

The invention relates to a novel stirring paddle, a stirring paddle system suitable for high-viscosity material fermentation and a fermentation method. The novel stirring paddle comprises a first hub, a supporting rod and a first paddle blade, wherein the first paddle is fixed on the supporting rod, the first paddle is a curved-surface thin plate, the curved surface is a cylindrical surface, and the curvature of the curved surface is 0.15. According to the invention, due to the bending design of the paddle, the stirring paddle can promote the axial flow of fermentation liquor while generating radial flow, stronger vortex can be caused, materials are fully mixed, and the cambered surface formed by the paddles can provide a space for fluid to pass through the paddles, so that cavitation is prevented from being generated behind the paddles; and according to the cross-shaped design that the secondary supporting rods are perpendicular to one another, the stirring paddle can form a vortex within the range of the hu