In view of the difficult situation of ordinary vehicles on uneven and complex roads, A new type of bionic robot of Bull Demon King is designed and developed. The mechanical structure and control system of the robot are researched and designed. Solidworks software is used to simulate and test the robot. The simulation results show that: The design of the Bull Demon robot to achieve stable walking, fast walking speed, The walking speed can reach 50cm / s; The stable and fast turning is realized, The turning speed is about 45cm / s, Flexible operation, strong mobility. The robot with good design, simulation and test is assembled and debugged with high-quality materials, Applied in the National Undergraduate robot competition in 2019, A robot can quickly climb 40 cm high steps, The competition test effect is good, has obtained the outstanding result.