Urban fringe is a transitional area between urban and rural areas, which has the characteristics of complex relationship between man and land and sharp conflict between urban and rural areas, and its ecosystem services (ESs) function presents complex interaction of trade-offs or synergies. It is of great significance to study the interrelationship between ESs in urban fringe areas and optimize them for the purpose of functional coordination, which will alleviate the human-land contradiction, realize rural revitalization and promote regional sustainable development. Taking Suzhou as an example, on the basis of identifying the urban fringe areas, this study selected seven key ESs, including food production, water yield, carbon storage, soil conservation, habitat quality, water purification, and cultural service. Combining Spearman correlation analysis and self-organized network method, we explored the trade-off-synergy relationship of ESs and its spatial-temporal evolution characteristics, and classified and proposed optimization strategies for urban fringe areas. The results are as follows: 1) 918 villages in Suzhou are identified as urban fringe areas; 2) There is a significant trade-offs relationship between habitat quality and food production (R_(xy) = -0.77), and there is a significant synergistic relationship between habitat quality and cultural service (R_(xy) = 0.95). The relationship between ecosystem services is dominated by trade-offs effect, with less synergistic effects, and the overall trade-offs relationship shows a weakening trend from 2010 to 2022; 3) According to the results of cluster analysis, the study area can be divided into five types of ecosystem service bundles, ecosystem service coordination bundle, ecosystem service incoordination bundle, ecosystem conservation bundle, ecosystem recreation bundle, and ecosystem risk aggravation bundle. From 2010 to 2022, the spatial pattern of ecosystem conservation bundle and ecosystem recreation bundle in the urban fringe area of Suzhou is relatively stable, and the evolution trajectory mainly occurs between ecosystem service coordination bundle, ecosystem service incoordination bundle and ecosystem risk aggravation bundle. The ecosystem risk aggravation bundle have the greatest changes from 2010 to 2022, which are closely related to the development rate of urbanization; 4) The optimization strategy is put forward to promote the coordination of ESs in urban fringe areas that contribute to the sustainable development of complex socio-economic-natural ecosystems. For ecosystem service coordination bundle, dynamically monitor ecological spatial changes to maintain the synergistic development of ESs. For ecosystem service incoordination bundle and ecosystem risk aggravation bundle, the main focus is on the management of short boards of ESs, and the ability of ecosystems to self-regulate and balance is enhanced through ecological remediation and restoration. For ecosystem conservation bundle, conservation should be strengthened, and development should be strictly controlled and restricted. For ecosystem recreation bundle, it is necessary to improve the blue-green infrastructure network, so as to realize the win-win situation between ecological protection and economic development.