he paper presented here analyses the developmem of Debris Flow， Discipline set forth the necessity of construction of the Debris Flow Information System (DFIS). According to the control module of the Debris Flow, the paper set forth the Information Module of DFlS, and rea1izes the module.under the PC-computer by the method of software engneering.

The paper is composed of six chapters. Chapter 1 advances the basic conception of lnfomation System, GIS and DFIS. Chapter 2 supposes the necessity of building up DFIS.Chapter 3 develops the natu.ral and disaster conditions in DanBa county. Chapter 4 analyzes and establishes the BanBa County DFIS by the method of software engineering. Chapter 5 provides some application exarnples of the system、including Database Management System. Image Management System , the Dynamo Simulating Module of Mozi gully. Chapter 6 sununaries the conclusions.