An abrasive belt clamp holder used with scroll saw, comprising a pin-free saw blade, wherein a clamp holder main body is connected to each of two ends of the pin-free saw blade, a placement groove matching the pin-free saw blade is provided in an outer wall of the clamp holder main body, a first bolt is movably connected to each of two sides of the outer wall of the clamp holder main body, the pin-free saw blade is disposed between two first bolts, a clamping plate is detachably connected to the top of the clamp holder main body, an abrasive belt is connected between the clamping plate and the clamp holder main body, a second bolt is movably connected between the clamping plate and the clamp holder main body.