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Gyro swing is a popular amusement ride with high speed and exciting.The safety is greatly affected by its dynamic property.In order to study the safety of gyro swing in design,the structure and drive system are analyzed and the topological structure of multi-body system for gyro swing is presented.Then the parametric dynamic simulation system for gyro swing is realized based on ADAMS secondary development,which can build the dynamic model and process the result data quickly.Comparison between simulation and test shows that the accuracy of analysis by the simulation system can meet the requirement.