The invention provides vertical loop line diamond cutting equipment. The vertical loop line diamond cutting equipment comprises a machine tool supporting part, a workpiece feeding system, a diamond line cutting mechanism. The diamond line cutting mechanism comprises an annular electroplated diamond cutting line, a drive polyurethane line wheel and a driven polyurethane line wheel, and the annularelectroplated diamond cutting line sleeves and is wound around the drive polyurethane line wheel and the driven polyurethane line wheel. A workpiece is installed on a workpiece clamping platform. By means of the automatic workpiece feeding system and a workpiece manual cutter feeding system, feeding of the workpiece in the X direction and the Y direction is achieved. A drive wheel motor drives thedrive polyurethane line wheel and the driven polyurethane line wheel to rotate, the annular electroplated diamond cutting line rotates, and cutting is achieved. The vertical loop line diamond cuttingequipment is simple in structure and high in cutting precision, the wire sawing and conveying speed of electroplated diamond is higher, running is more stable, and a lower subsurface damage is achieved.