In order to improve the efficiency of campus food delivery under the epidemic situation, an intelligent food delivery robot with Raspberry PI (ROS system) and STM32F103VET6 as the control core be designed in this paper, which can achieve the goal of fully automatic food delivery in the dormitory. The Raspberry PI (ROS system) sends the food delivery command through WIFI, the system receives the command and responds, sends the speed command to the controller installed in the robot chassis and advances to the designated position according to the predetermined route, and sends the command to the system to prompt the students to take the food. The system mainly includes radar navigation, ultrasonic obstacle avoidance and voice prompt system and other modules to work together to complete automatic food delivery.