A finger-pressed auxiliary device for a stringed instrument is provided. The stringed instrument comprises a body, a neck connected to the body, a fingerboard disposed on the neck, a plurality of frets disposed on the fingerboard at spaced intervals, and a plurality of strings extending along the length direction of the neck. The finger-pressed auxiliary device comprises: a plurality of finger-pressed plates extending along the length direction of the strings and each being disposed to correspond to a respective string; an upper support secured to the top of the neck; and a lower support secured to the bottom of the neck or the body. As the fingers only have to contact the surfaces of the finger-pressed plates, the pain associated with holding strings with fingertips is avoided.