Guided by the requirements for highly efficient and high-quality processing of large-scale complex components in fields such as aerospace, marine navigation, and rail transit, this paper explores the key technologies of the multi-mobile robot collaborative parallel manufacturing system for large components, which is based on the group robot clustered parallel manufacturing system. Centering on the processing technology requirements of typical large-scale components, and based on the design and development of various and multi-form mobile robots, including mobile measuring robots, mobile machining robots, and mobile assembly robots, this paper puts forward a collaborative parallel manufacturing scheme based on multi-mobile robots, a robot body design scheme for robotic machining of large components, a multi-modal collaborative robot sensing and measurement scheme, as well as control schemes for the multirobot  collaborative machining robot body controller and the group machining robot system. It elaborates on the control strategies and schemes for multi-group robots in mobile machining. Regarding key technologies such as the collaborative parallel machining methods for groups of machining robots, large component measurement, and group robot collaborative control, this paper not only explores ways to improve and optimize the performance of domestic industrial robots from the aspects of robot body research & development and controllers but also attempts to broaden the working ideas for subsequent large component processing in aerospace and other fields.