Abstract: Taking 296 prefecture level and above cities in China as the research object, this paper establishes the evaluation index system of urban prevention and control ability. The comprehensive index method is used to measure the urban prevention and control ability, and the natural fracture method is used to divide it into 6 levels. The results show that the overall and sub dimensional level of urban prevention and control ability is low, and the number of cities with living material support ability higher than the average is the least; In addition to the five cities in Beijing and Tibet above the higher level, there are differences in administrative levels among cities below the middle and high level, such as municipalities directly under the central government, sub provincial cities, provincial capital cities and general prefecture level cities. Most cities with relatively low-level prevention and control capacity are concentrated on both sides of Hu Huanyong's population distribution line; The urban prevention and control ability shows strong positive spatial autocorrelation, and the overall spatial differentiation characteristics of large dispersion and small aggregation. The high-high type is concentrated in 6 cities in Tibet, and the high-low and low-low types are intertwined in the middle and eastern regions. Finally, it puts forward the response mechanism to improve the ability of urban prevention and control.
