Abstract: This paper discusses about the concept of cellular and transformation rules and presents the integration of cellular automata with decision-making of multi-object with grey situation and hierarchical method.A urban dynamic expansion model is constructed on the basis of decision-making with grey situation and hierarchical method.The method for decision-making of multi-object with grey situation is used to define the set of landuse and the set of landuse situations as well as the set of objects in a situation.The model has been tested by taking Qionghai city of Hainan province as an example.