The double-plane vertical pneumatic spindle dynamic balancing machine produced by Shanghai Jianping Dynamic Balancing Machine Manufacturing Co., Ltd. can perform double-plane dynamic balancing or single-plane balancing on the workpiece when the workpiece is installed vertically. This machine is widely used in single/double-plane unbalance test of disc-shaped workpieces such as centrifugal fan, brake disc, brake drum, saw blade, water pump impeller, flywheel, grinding wheel and so on.