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The servo control system of pneumatic lightweight manipulator has some problems, such as poor control stability, unsatisfactory control effect and being unable to deal with the changes in the external environment. The servo control system of pneumatic lightweight manipulator based on JAVA technology platform is designed. The system hardware mainly designs the motor model, joint double closed-loop controller, speed loop and position loop. Determine the equivalent circuit of DC motor, analyze the motor constant and adjust the sensitivity of manipulator to ensure the normal operation of motor. The joint double closed-loop controller is set to transmit data through PCI1711 data transmitter, and the speed loop is based on PI control. Adjust the bandwidth proportion term, use the differential control method to increase the system damping and eliminate the local static error, and connect an appropriate proportion correction link in series on the outer ring of the position loop to offset the local static error in the main loop of the system. The data collector is designed to realize information conversion and reading. The data processing unit is designed through the data processor, microcontroller and serial communication module to ensure the efficiency and accuracy of data processing. The system software realizes the compensation control by using JAVA platform, establishes the manipulator model to control the movement of the manipulator, extracts the salient features of the target object according to the collected images, and carries out feature matching in the database, so as to realize high-precision and efficient target object recognition. The experimental results show that the servo control system of pneumatic lightweight manipulator based on JAVA technology platform has good control stability and control effect, and can better adapt to the changes in the external environment and complete the grasping action.