高速动平衡机是汽轮机制造厂调试汽轮机转子在高速运转时动平衡的主要设备，试验机台架的四个平面的相对高度应要求一致。本文就如何检测高度差提出了多种检测方案，确定了一种既实用又可靠的检测方法，有一定的推广价值。 High-speed dynamic balancing machine is the steam turbine factory debugging turbine rotor balancing at high speed when the main equipment, test machine bench four planes relative height should be required. In this paper, we put forward a variety of testing methods on how to detect the height difference, and have determined a practical and reliable testing method with some promotion value.