Technology industry is changing in the current. Mechanical arm is widely used in industrial automation, minimally invasive surgery, complex and sophisticated products, even dangerous for the implementation of the tasks of human. Mechanical arm has brought great convenience in human life, and full of vast opportunities. This paper presents the design of an automatic and intelligent mechanical arm with multiple degrees of freedom robot and mobile devices. Robots can really achieve in life with services and the implementation of tasks. The system combines the image processing technology. After the image which was captured by camera has been identified, the results passed to the controller and command corresponding to the mechanical arm movements. This topic is not a repeat of the implementation of the task with a traditional industrial arm, but random objects and tasks to judge. Therefore, the additional deduction must be smooth, inverse kinematics is used to handed the object space coordination in the transition to the deployment of the arm shaft angle, and trajectories generated using the motor actuator to carry out an object gripping. Moreover, taking into account the mechanical arm displayed a good attitude required to perform coordinated action. In the future, folder object robot system can take towards more complex and highly flexible environment in daily life.