Training aiding device for standardizing actions of upper limbs of swimmer

The invention relates to a training aiding device for standardizing actions of upper limbs of a swimmer. The training aiding device comprises a buoyancy assembly which sleeves a human body, and a protection plate assembly which is arranged at one end of the buoyancy assembly and is used for limiting a movement range of the upper limbs of the human body; and the protection plate assembly comprises a baffle, and a first protection plate and a second protection plate, which are symmetrically arranged at the two ends of the baffle. The training aiding device provided by the invention have the excellent effects that a streamline region for arc-shaped arm pulling of the upper limbs of the swimmer is formed by the baffle, the first protection plate and the second protection plate; the baffle is used for preventing arms from being pulled too deeply; the first protection plate and the second protection plate are used for limiting the arm pulling and preventing the arms from being pulled too widely; and particularly, a