Auxiliary device and method for brushing anticorrosive paint on aero-engine blade

The invention discloses an auxiliary device and method for brushing anti-corrosion paint on an aero-engine blade. The auxiliary device comprises a clamping body, and a plurality of tenon inserting grooves are formed in the bottom face of the clamping body and used for being matched with tenons of the blade to be brushed; and a grip is arranged on the top surface of the clamping body. Comprising the following steps that S1, blades to be brushed are inserted into tenon inserting grooves in the bottom face of a clamping body through tenons of the blades to be brushed, and all the blades to be brushed are vertically arranged downwards; s2, the blade bodies of all the to-be-brushed blades are steadily immersed into an anti-corrosion paint bucket by holding a handle with a hand; s3, the whole device is stably lifted, the painting condition of the blade body is observed, and if the condition that the blade body is not completely painted exists, the step S2 is repeated; and S4, the painted blade and the auxiliary dev