This article focuses on the demand for virtual simulation of industrial robots in current production activities. Using Unity3D engine as the development platform, and leveraging software such as 3Ds Max and SolidWorks, virtual models of industrial robots are established. Taking ABB IRB 120 industrial robot as the research object, the article establishes the kinematic model of the industrial robot and conducts research on the forward and inverse kinematics solutions as well as human‐machine interaction design based on the prototype of IRB 120 robot, in order to achieve motion simulation of virtual robots.