The invention discloses a fingernail for playing a musical instrument. The fingernail comprises a fingernail body which is provided with a point part, a pinch plate is hinged to the fingernail body, and a fixing device is arranged on the fingernail body and can lock the pinch plate tightly. The fixing device is a fixing block arranged on the fingernail body. When used, the fingernail for playing the musical instrument is wound on a finger through adhesive tape, after the fingernail is wounded by multiple circles, the pinch plate is buckled, a bending part arranged on the pinch plate is connected with the fixing block in a buckled mode to fixing the adhesive tape, then the adhesive tape is cut through a cutting edge, the tail end of the adhesive tape is removed, and a sealing opening of the adhesive tape is prevented from being exposed in air. Due to the fact that the sealing opening of the adhesive tape is fixed below the pinch plate without making contact with the air, the adhesive tape can be used repeatedly, cost is saved, and moreover time for replacing the adhesive tape is saved. The adhesive tape can be torn out conveniently due to the arrangement of the cutting edge.