Accompanying with rapid development of urban economy and further acceleration of urbanization, higher demands have been placed on urban engineering geological work. Taking urban area of Rizhao city as the research subject, by using multi-factor hierarchical weighted index summation method, a suitability evaluation of the engineering construction zoning in the urban area has been conducted. The urban engineering geological layers (groups) in Rizhao city are divided into 7 engineering geological layer groups and 44 engineering geological layers. Based on quantitative evaluation of engineering construction suitability zoning, selecting topography, engineering geology, hydrogeology, and site stability as first level evaluation factor, selecting ground slope, stratum structure, bearing capacity, pile end-bearing layer, groundwater depth, corrosivity, water abundance, liquefiable soil, soft soil thickness, and active faults as second evaluation factors, the study area is classified into suitable zones, moderately suitable zones, and poorly suitable zones. The suitable and moderately suitable zones are the most widely distributed. They can be regarded as main areas for urban construction.The above evaluation results have significant theoretical and practical guiding importance for serving urban planning layout, construction development, and engineering site selection in Rizhao city.