In response to the problems of large terrain undulations, concentrated runoff concentration, and insufficient connection between numerical simulation and system evaluation in urban valleys on the Loess Plateau, a stormwater carrying capacity evaluation framework was constructed by coupling InfoWorks ICM simulation, entropy weighting TOPSIS evaluation, and obstacle diagnosis in a typical area of Pingliang City. The stormwater carrying capacity of the study area was evaluated and the main obstacle factors were analyzed. The results show that under the condition of a rainfall return period of 20 a, 24 out of 26 primary drainage subdivisions in the study area experienced varying degrees of waterlogging, with a submerged area of 0.9 km², accounting for 13.78% of the total area of the study area. The spatial differentiation of waterlogging risk is significant, and it is strongly controlled by the stepped terrain pattern with characteristics of higher in the south and lower in the north. The overall stormwater carrying capacity of the study area shows a pattern of high in the south and low in the north. The middle carrying capacity subdivisions of the north-south transition zone are the important connecting belt to improve the spatial pattern of the overall stormwater carrying capacity of the study area. The runoff coefficient, drainage pipe density, blue-green space ratio, and elevation are the main obstacles that restrict the improvement of carrying capacity. Keywords:urban stormwater carrying capacity; InfoWorks ICM; obstacle degree; the Loess Plateau; Pingliang City 〖FL