Calculating Method for rotary blade loss of axial fan is given.Calculations on the lossing and routine lossing models are carried out by the use of 20 groups of fan test data.

• 给出了一种计算轴流通风机动叶损失的方法，并用20组风机试验数据对该损失模型和常规损失模型分别进行了计算。