Abstract: Based on the analysis of geological environment conditions in the study area, sensitive factor and comprehensive index evaluation model of geological environment suitability are constructed in Jinan north across new urban area. The stability of the Yellow River is selected as sensitive factor, and the important surface water source, water-richness of groundwater, minimum buried depth of groundwater level, active fault, bearing capacity of foundation, soft soil, liquefied soil and Goaf Collapse are selected from four aspects of hydrology, hydrogeology, engineering geology and environmental geology as important factors. The weight of important factors is determined by expert scoring method. The suitability of geological environment is comprehensively evaluated. The results show that suitable area and relatively suitable area of geological environment account for 72.37% of the total area, the overall situation is good, which can meet the needs of new urban planning and construction. The evaluation results can provide a scientific basis for the planning, construction and management of the new urban of Jinan's Extending towards the North. It is conducive to the realization of urban construction and the optimal allocation of geological environment resources.