The purpose of this research is to design a robot which can interact with people and help them in their daily lives and common areas. In order to accomplish these tasks,the robot must show some friendly feelings to demonstrate friendly features and personality. Based on bionics,a humanoid head robot is developed and the robot's behavior decision-making model is established. The robot has six basic facial expressions,and can accomplish face detection,speech recognition and synthesis,and emotional behavior decision. The robot can interact with people in an emotional manner through machine vision,speech interaction and emotional expression effectively.