This study examines the coupling and coordinated development of the competitiveness system of the convention and exhibition industry in China's prefecture-level cities. Using an index system, the entropy weight method, and the coupling coordination degree model this study quantitatively measures and investigates the characteristics and influencing mechanisms of change in the convention and exhibition industry. The analysis shows that between 2013 and 2019, in China's urban convention and exhibition industry, the competitiveness subsystem and its comprehensive development level have improved significantly. Additionally, among the factors influencing the convention and exhibition industry in China, the economic strength of cities exerts the greatest impact, followed by the capacity of the post and telecommunications sectors, while vitality has the least impact. The level of informatization plays a crucial role in the coupling, coordinated development, and change of the competitiveness system of an urban exhibition industry. Improvement in the competitiveness of the urban exhibition industry is closely related to a variety of resource elements. Each city should highlight its own endowment advantages and status, clarify its scale and positioning, and form a regional development pattern of differentiated development and dislocation competition with surrounding cities through the development strategy of consolidating advantages and addressing shortcomings.