The work aims to design an intelligent crawler fire fighting robot with unmanned air vehicle (UAV) monitoring functions in virtue of artificial intelligence (AI) technology and fire fighting robot function in order to define the functional demand indicators of the fire fighting robot. Functional demand indicators of the robot above were defined by literature research and market product analysis in virtue of KJ affinity graph. The weighted values of all functional indicators were calculated by questionnaires, interviews and analytic hierarchy process (AHP), and consistency test was completed as well. Then the design practice of the robot was completed from such processes as design positioning, sketch design, structural analysis, functional analysis, application of AI technology, design of intelligent control system, steps of data module analysis and design of interface UI, etc. via the design practice method. 1 target layer, 4 first-level indicators and 13 second-level indicators of demand indicators of the robot are obtained. To be specific, the priority ranking of first-level indicators is safety, functionality, intelligence and aesthetics. Firefighters give high ratings on the explosion resistance, fire resistance and functions of climbing, obstacle crossing and avoidance of the robot. They also show expectations on intelligent functions of the robot, such as intelligent analysis of fire sources, planning of walking paths, and UAV patrol check, etc. At last, an intelligent fire fighting robot with UAV monitoring function is designed by combining the research conclusions and design practice. In virtue of the land and air modes, the UAV is capable of patrol check, path planning, intelligent analysis, fixed point monitoring, fire alarm, etc. as well as fire extinguishing and rescue.