Abstract: A method for accelerating 3D animation production, the method comprising: inputting a text string command; analyzing grammar of the text string command to find out the subject, the verb and the object or the quantity and object, through a main program. Then, the main program deliveries order to a subprogram which controlling the subject, to execute judgment and treatment of the action and behavior of the subject. After that, the subprogram finds out the default parameters relating to the relative coordinate and relationship between the subject and object, the current state of the subject, the actions and behaviors to be executed by the subject as well as environmental factors and personality of the subject. Finally, the subprogram judges and integrates those default parameters to control the subject executing appropriate actions or behaviors in response to the text string command.