The auspicious character image is a minority category in the folk creation art, and its publicized personality, original expression and rich imagination are of great academic value. The work aims to research the occurrence of auspicious characters to provide theoretical support for the formation of folk characters. Starting with the order from the inside to the outside, the ideological motivation of the text image was explored. From the two dimensions of experience and practice, the formation of words under the influence of this motivation was explored. From the aesthetic expression of the text image, the expression of image under the influence of this motivation was considered. The image of folk auspicious characters has the characteristics of image integration, which is a creative driving force under the influence of the concept of the core of the natural law. In formation of images, on the one hand, the core of the natural law acts on intuitive experience to form creative motivation; On the other hand, it acts on practice and forms analogical and associative word-forming techniques. Under the guidance of the core of the natural law, the text image has the aesthetic characteristics of inter-conversion of image, mutual generation of form and meaning, gorgeous artistic conception, and auspicious blessing. Finally, under the progressive interpretation of the core, method and performance, the whole process of the occurrence of the auspicious character image is restored.