A real-time monitoring system for propeller dynamic parameters is designed to solve the ground debugging problem of propeller with power test system. The signal of propeller balance is measured by NI portable data acquisition system, and the dynamic parameters of propeller, such as tension and torque, are obtained in real time by creating virtual instrument data acquisition tasks and tabulating balance formulas; During ground debugging, the load characteristics of the current propeller under different blade angles and rotating speeds can be grasped in real time by obtaining the measured propeller dynamic parameters, and the motor output performance can be obtained by monitoring the driver parameters. The results show that the system can be used as a backup and quick test means to help quickly eliminate or locate data test problems in wind tunnel tests.