Robot spraying has been widely used in coating production lines because of its convenience and efficiency.The robot and other related equipment in the spray booth are mainly sitting on the steel structure.Ensuring the stability of the steel structure is an important prerequisite for continuous production.In this article a robot spraying station of a certain project was taken as an example.Based on the structural characteristics of the equipment,a reasonable simplified calculation model was proposed,and the force applied on the steel platform was effectively divided and combined.The stability of the steel structure was verified in terms of two aspects,namely meeting the requirements of steel structure material performance as well as the robot application technology,which provided some guidance for the design,verification and optimization of similar structures in subsequent similar projects.