Open Source Mobile Robot is a multi-purpose equipment for teaching and research, which is a highly integrated multi-degree-of-freedom collaborative arm and mobile robot. The mobile robot is loaded with 50KG, equipped with depth vision, dual LIDAR and ultrasonic sensors, and the collaborative arm is equipped with a motorized two-finger handgrip at the end of the arm, with an overall endurance of up to 4 hours. The control system runs ROS and provides ROS-based SLAM, auto-navigation and vision processing software packages, and the M-ARM is equipped with wide-range mobile operation and multi-point grasping capabilities. In addition, it also provides Android interface and HTTP service interface to meet the needs of multi-mode teaching and secondary development. Based on M-ARM mobile operation robot can support the teaching and experiments of basic robotics, SLAM and autonomous navigation, mobile operation of intelligent robots and robot control system courses, and at the same time, meet the needs of scientific research and competitions in the direction of machine vision, SALM and autonomous navigation, mobile operation and so on.