In view of the complex and changeable fire situation in the chemical industry park, a crawler type fire fighting robot is designed to replace the firefighters to directly enter the fire scene to complete dangerous tasks. The strength check and statics analysis of the main load-bearing parts and transmission gears of the crawler type fire fighting robot are carried out using Ansys, so as to improve the reliability of the robot's structural design. Finally, the kinematics theoretical analysis of the robot's various motion postures is carried out.