Abstract:China's urbanization has entered a stage of high-quality development transformation, with continuous emergence of regional cluster development projects. These projects involve diverse construction entities and cross-sectional implementation of municipal and housing construction. There are issues such as an imperfect standard system, low coordination efficiency, and great difficulty in style control. The traditional single-project consulting model is difficult to adapt to the needs of regional integration construction. Taking the design coordination and overall planning practice in Xiongan New Area as a case study, this paper explores the service model, core content, and implementation effectiveness of regional-level design coordination consulting. It summarizes replicable and promotable experiences, provides an integrated overall planning scheme for the entire life cycle of large-scale area cluster development, and also offers practical references for the upgrading of whole-process engineering consulting towards regionalization and systematization.