This study examines the homogenized development of three closely related cities in Guangxi Province of China. The cities are Beihai, Qinzhou, and Fang Chenggang (otherwise called Beiqinfang), as an important part of Beibu Gulf urban agglomerations in China.The paper explored the current situation of Beiqinfang urban industries through quantitative research methods, applied correlation degree measurement index to conduct effective measurement on the isomorphism of Beiqinfang urban industrial

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... lopment, in order to understand the current situation of industrial isomorphism among those areas, establish industrial dislocation development among Beiqinfang cities, and how to achieve sustainable development.We recommend that the three cities should actively avoid the mutual competition among them, so as to achieve effective resource allocation and prevent industrial homogenization. State Council of China approved the construction of Beibu Gulf national urban agglomerations, and the Beihai-Qinzhou-Fang Chenggang (Beiqinfang) is an important part of the Beibu Gulf urban agglomerations. Under the background of constructing urban agglomerations (Li et al., 2020), and based on the research of urban resources (Ze et al., 2019), the development situation, and technological conditions, experts and scholars have been concerned about how to position urban development, formulate urban development strategies and development goals, and to determine the development direction and industrial structure, as well as actively avoid the mutual competition among cities, so as to realize effective resource allocation, prevent industrial homogenization, and reduce regional competiveness. Domestic scholars also have put forward a lot of research findings for reference. For instance, in terms of urban positioning, Hu (2016) believes that city development must be based on its own reality and the overall planning of urban agglomerations, and the urban function positioning should be determined properly, to develop relevant industries, promote industrial agglomeration and integration, and finally formulate a reasonable system of division of labor and cooperation. Also, Li (2016) thinks that the urban development should set a reasonable positioning for the urban agglomerations and each city. Industries suitable for key development should be selected based on the positional selection, so as to realize dislocation development, promote regional coordinated development, construct a reasonable framework of regional industrial division and cooperation, and try to shape a reasonable division pattern. With regards to the coordinated development of urban industries, Huang (2016) indicated that based on the advantageous industry of each city, complementary advantages with other urban industries in the region should be coordinated actively, so as to reinforce cooperation, and achieve common development. Through research on breaking administrative barriers in industrial development, Luo (2016) found that the labor division and cooperation among industries should be given full play, to avoid homogeneous competition, and promote joint development of industrial clusters. In regard to the urban dislocation development, based on the urban industry dislocation development, Yuan (2017) suggested that it is better to make scientific planning and positioning on the city's industrial development, so as to realize regional coordinative development, avoid the homogenization and mutual competition of industries among cities, and shape unique industrial clusters among regions. Generally speaking, scholars in China have done a lot of research on the dislocation development of urban industries (Xiaoxiao et al., 2020; Xueting et al., 2017) from different directions, such as positioning, coordinated development and dislocation development among cities, and have made some achievements. However, the research methods used were more focused on qualitative analysis and less quantitative analysis. This paper analyzes the dislocation development of Qinzhou, Beihai and Fang Chenggang using quantitative analysis method in order to promote healthy development amongst these cities.