The invention discloses an urban physical sign index model data preprocessing method. The method specifically comprises the following steps that S1 the comprehensive physical signs of a city can be collected through a comprehensive physical sign index collection module, wherein the comprehensive physical sign indexes are specifically divided into the infrastructure, the ecological environment, thepeople's life, the public security, the urban traffic, the industrial economy and the like; the comprehensive physical sign information can be analyzed and processed through an index analysis module,various kinds of information can be marked through a marking module, then the information is fed back to the central processing system through a feedback module, and then the information is sent to the physical sign index library through a central processing system to be stored. The invention relates to the technical field of smart cities. According to the urban sign index model data preprocessing method, the comprehensive analysis processing and prediction can be carried out on the sign indexes in urban operation, meanwhile, the urban managers can conveniently look up the sign indexes in a three-dimensional display mode, and the favorable conditions are provided for subsequent urban management and planning.