Today, the development of robots become more and more intelligent and humane voice of exchanges between the robot and the most natural, the most convenient means. Speech recognition is through the voice, so that machines understand people's meaning thereby implement the corresponding order, completed corresponding action. Make an intelligent robot and advanced. Based on the above robot development direction, The design of the use of Sunplus 16 microcontroller in digital signal processing and speech processing characteristics. According to speech recognition to the basic principles of the design of a speech-controlled robot system, The system includes voice recognition module, voice and broadcast module robot motor control module. The system passed the pre-training can identify the specific voice, which can bring the robot voice orders under control forward, backward, dancing, launch and fired consecutive Frisbee, and other functions.