With the continuous evolution of technologies, the manufacturing industries have always been striving to reduce production costs, improve product quality, and increase production line efficiency all at the same time. Owing to the improvement of computing power of processors, integrating various manufacturing needs, diminishing the difficulties to achieve prospective goals, and realizing fault predictions and diagnosis has become one of the main directions of industrial 4.0 technology research. The research in this paper mainly explores the application of intelligent manufacturing technology. By using the concepts of Digital Twins and integrating two software, Unity3D and Automation Studio, the automation control of a production line scenario was provided. We will demonstrate the combination of different technologies in the virtual reality system and explain the benefits of the application compared to those in reality. Under the platform of Automation Studio, the various parameters and their mechanical characteristics of projects could be adjusted to conduct research under different states. Unity3D virtual engine was employed for modeling mechanical operations to design, test, verify the feasibility of its optimized simulation parameters, and realize the operating scene status in a real environment. With the concept of integration in this paper, operators and technicians could be trained or even discover problems with actual equipment in advance, optimize control strategies to achieve expected operational effects, and avoid the risk of operational failure. In the future, this approach can be applied to courses or online, providing possibilities for simulation and experimentation to achieve the goal of personnel training and education.