Harmony Kojin currently has problems with over-commercialization and lack of cultural atmosphere. In the small alleys of the ancient village, there are a variety of shops, except for the architectural style that fits the elements of the ancient village, the rest is a complete merchandise sales center in the form of a shell of the Three Kingdoms ancient village. The whole ancient city has a strong commercial atmosphere because the cultural elements of the Three Kingdoms are not integrated too much. Excessive commercialization will lead to the loss of traditional culture. Over time, local cultural implications will no longer exist. Tourist awareness and reputation of tourist destinations will also continue to decline. The above is a comprehensive analysis of the status of cultural tourism in the Goseong Three Kingdoms in Harmony through on-site interviews and survey methods. Ancient cities are mainly tourism single product, few experience projects, lack of sense of innovation, incomplete tourism infrastructure of tourist attractions, small touristic market, insufficient market attractiveness, low consumption level per person, lack of publicity efforts, scenic spots and scenic spots. Attractions are not well known, tourist attractions are too scattered, tourism satisfaction is not high, human resource level is not high, professional talent is lacking, excessive commercialization, lack of cultural atmosphere and other problems. In response to these problems, through careful analysis, suggestions and countermeasures to promote the sustainable development of the Goseong Three Kingdoms Cultural Tourism in Harmony are presented below to realize the leap forward and development of the Three Kingdoms. Kingdom cultural tourism of the ancient city Zhaohua.