For the matter of urban and regional planning or reach, data collating is a very important and trivial task. This paper takes a view of urban and regional information system, points at the characteristics of urban and regional planning data, to design a coding system and data based framework for developing an urban and regional planning data base system. Try to use microcomputer system to set up a prototype for testing the system practicability. And suggest to be as the foundation of urban and regional planning information system.