A musical instrument support comprising: first and a second pads (10, 20), each of which has a metallic frame and an outer cover covering the frame, the first and second pads (10, 20) configured to come in close contact with a back and shoulders of a wearer; a rear connection string connected to a rear end of each of the first and second pads (10, 20) and configured to be arranged along a rear surface of an upper body of the wearer; a front connection string connected to a front end of each of the first and second pads (10, 20) and configured to be arranged along a front surface of the upper body of the wearer; and a fixture bound to the front connection string and allowing the musical instrument to be attached or detached, wherein the first and second pads (10, 20) comprises, first and second wings (15, 25), each of which is formed on a central part of each of the first and second pads (10, 20) protrusively towards the inside so as to facing each other and the first wing having a plurality of first adjusting holes and the second wing having a plurality of second adjusting holes in a thickness direction; and wherein the rear connection string is connected to the rear end of each of the first and second pads (10, 20) via the first and second adjusting holes (17, 27), the musical instrument support being characterized in that the first and second pads (10, 20) further comprises first and second rear through holes (18, 28) formed through the rear end of each of the first and second pads (10, 20), and in that the rear connection string is further connected to the first and second rear through holes (18, 28). first and a second pads (10, 20), each of which has a metallic frame and an outer cover covering the frame, the first and second pads (10, 20) configured to come in close contact with a back and shoulders of a wearer; a rear connection string connected to a rear end of each of the first and second pads (10, 20) and configured to be arranged along a rear surface of an upper body of the wearer; a front connection string connected to a front end of each of the first and second pads (10, 20) and configured to be arranged along a front surface of the upper body of the wearer; and a fixture bound to the front connection string and allowing the musical instrument to be attached or detached, wherein the first and second pads (10, 20) comprises, first and second wings (15, 25), each of which is formed on a central part of each of the first and second pads (10, 20) protrusively towards the inside so as to facing each other and the first wing having a plurality of first adjusting holes and the second wing having a plurality of second adjusting holes in a thickness direction; and wherein the rear connection string is connected to the rear end of each of the first and second pads (10, 20) via the first and second adjusting holes (17, 27), the musical instrument support being characterized in that the first and second pads (10, 20) further comprises first and second rear through holes (18, 28) formed through the rear end of each of the first and second pads (10, 20), and in that the rear connection string is further connected to the first and second rear through holes (18, 28).