In this paper，the authors present an object-oriented framework which adapts to a varietv of dynamic simulation and complex 3D animation controls．The framework is based on a hybrid model．The static structures Of actors are combined as part hierarchies.The attributes of actors determine their shape，appearance，tlme-varying behavior and are defined as class hierarchies．The attributes's dynamic assignment is implemented by dynamic constraint mechanism．This framework has already been used in SimuKit-an inte-grated environment for automatic generation of visual effect for multiple dynamic simula-tion．It is basically implemented on SGl workstation．It is feasible to implement multiple dynamic simulation by this framework．