In this research I'm going to expose Averroes maturity conception of legal movement to occur in the world and among the assets ; as long as the assets are composed of material and form , the movement depends on the union between material and form until you get to the process of trans formation of the power in herent in the material by the action in the form . And here comes the role of the actor which moves the material toward the union with form through movement , so the movement also serves as a process of the dialectic between the material and form that consist the nature of the assets in the world , and thus show the the movement it is bringing out of material to the form by the dialectic of power and action by becoming kinetic between assets Thus , the conception of movement to Averroes highlights the important of form power and act as essential elements for the occurrence in existence . He stressed the vole of each element in the movement as well as the movement needs an actor and moving thing which are (material ,form, actor).