A stringed instrument playing assistance implement which can be altered and mounted on a finger, can be adjusted and make a perfect fit of a location, an angle, and a size for any sort of player's finger for preventing slippage or falling off said finger. The stringed instrument playing assistance implement can be altered and used for a variety of string picking techniques. The stringed instrument playing assistance implement is employed when playing a stringed instrument by picking the strings thereof and includes a wire-shaped member, which can be altered and mounted on a finger and which is capable of retaining a shape.