Based on the market demand for service-oriented robot, the automatic delivery system of robot is designed in this paper. The system is controlled by ArduinoMega2560 control board, ROS (Robot Operating System) as the robot operating system, combined with Slam particle filter algorithm to complete the robot positioning and navigation functions. At the same time, based on the Qt software interactive platform to control the robot walking, using the steering gear to open and close the storage box, 4G module SMS notification. In summary, this paper designs an interactive platform for indoor file transfer service robot based on ROS and Slam particle filter algorithm. Through this platform, we can control file access, notify the operation of pickup, and improve the comfort of human-computer interaction.