This book constitutes the refereed proceedings of the 5th International Conference on Collaborative Robot Technology and Application, COBOT 2025, held in Hangzhou, China, during November 29, 2025.The 29 full papers included in this book were carefully reviewed and selected from 33 submissions. These papers have been organized in the following topical sections: Collaborative Robots and Human-Robot Interaction Systems, Mobile and Composite Robots, Service Robots and Intelligent Perception Systems, Robot Navigation and Control, Embodied Intelligence Foundations, Embodied Large Models and Robot Integration, and Robotics Applications.