Yangko field map is rich in materials and connotations, and its forms come from labor tools, household appliances, flower buildings, costumes and headdresses, historical stories, myths and legends, war situations and so on. It is characterized by the inner side of the excircle and Fiona Fang symmetry. Its trend is left in and right out, running in circles. Obviously, this law is influenced by China's traditional aesthetic consciousness, and it is the inheritance and development of traditional aesthetics. The ancients thought that the sky was round and the earth was square. Summarizing and understanding the periodic changes of nature with the circle of heaven and distinguishing the diversity of things with the place have become the aesthetic standards to regulate people's moral behavior. The excircle and the inner side of the yangko field map are Fiona Fang symmetrical, which is undoubtedly developed and created under the control of this aesthetic consciousness. The field map gives people a neat, solemn, simple and mellow aesthetic feeling. Another regular feature of the yangko field map is that all the field maps are composed of different shapes of pineapple (the circular route that dancers cross), which can be divided into three types: single pineapple, multi-headed pineapple and image pineapple. The combination is from simple to complex and from simple to complex, forming a set of regular multi-level combination schemes. For example, Double Cross Street consists of eight single pineapple flowers; "Daxiangshan" consists of six multi-headed pineapple flowers; "Money Butterfly" consists of four butterfly-shaped pineapple flowers. If two or three kinds of pineapple flowers are used and carefully conceived, more complex field maps can be shown, such as "single-split gourd"