Abstract: Based on noetic science, the forms of information memory are analyzed and supposed to be divided into three kinds, i.e. perceptive image, intuitive source and language The different styles of information processing are corresponding to different thinking. We know that there are two main kinds of thinking, intnition and logic. A thinking model is built, and some basic problems in mathematics are explored, which clearly explicate the limitation of logic method The problems in artificial intelligence development are analyzed and the prosecpts of simulation intelligence are discussed.