The invention provides a rotary piston compressor blade, a manufacturing method of oil storing grains in the rotary piston compressor blade, and a compressor, belongs to the technical field of mechanical engineering, and solves the problems that the surface of a conventional blade is nitrided and plated by adopting a PVD method, and since the precision and the roughness of compressor parts are improved, the cost is high. The rotary piston compressor blade is provided with two large planes. The straight oil storing grains are arranged on each large plane. The total area of the oil storing grains in each large plane is 15%-20% of the area of the large plane. The oil storing grains are additionally arranged, and the area of the oil storing grains is limited, so that the bearing area of the blade is ensured, and the bearing performance of the blade is enabled to meet the design requirement; and the oil reserve between the blade and an air cylinder is increased, and the smoothness of lubricating oil entering the clearance between the blade and the air cylinder is improved, so that the lubricating performance of the blade is improved, and the wear resistance of the blade is improved.