This product is a kind of multi-function balance robot based on five-link mechanism, which has the characteristics of active suspension, flexible movement, and can realize jumping function. Its core part is the chassis module, which has three main functions. The first is to move quickly. As the two wheels of the balance robot realize the balance movement, the two-wheel balance has the characteristics of flexible movement and can have good speed performance, which can make the balance robot play a more significant role in the operation scene. The second is to realize jumping, and use the wheel group structure and active suspension mechanism to cooperate to pass through the undulating road section; the third is load and interaction, and the chassis needs to load the pan-tilt module. As the configuration of the double-arm wheel-leg type as the double-wheel balance module can realize active suspension, it can actively absorb longitudinal and lateral impacts. When subjected to longitudinal impact, the impact is absorbed by adjusting the position of the wheel leg connecting rod synchronously; when subjected to lateral impact, the impact is absorbed by adjusting the lifting height of the wheel legs on both sides. In the unavoidable inertial impact, the damage of the robot itself can be reduced. The product can be converted into a two-wheel balanced mobile robot that can quickly launch plastic projectiles. After carrying the image transmission module, the image can be returned in time. In the future, it can also be used in security, explosion-proof, hazardous environment and other working environments. Compared with the conventional four-wheel robot, the modified two-wheel balance robot can realize in-situ steering, the required turning radius is greatly reduced, the demand for space is greatly reduced, and it has a high degree of flexibility. Not only can it work in a narrow environment, but it can also be hidden in some narrow spaces and short shelters to achieve a powerful assault. Among them, the stable realization of the jump function and the precise positioning are the key to balance the robot's effective attack and high passability, so that it can accurately attack the enemy and still have a good balance when working in the field. The modified robot from top to bottom can be divided into: launch module, PTZ-bomb module, two-wheel balance chassis module. The two-wheel balance chassis module is the basis of the balance robot with active suspension. In addition, the shooting module carried on the PTZ carries out accurate scanning and shooting through visual recognition effect, effectively avoiding the delay effect of manual operation and improving the accuracy of shooting operation. The product can also be converted into a field fire-fighting robot that can automatically identify flames. In a complex field environment, the balancing robot has a speed that cannot be matched by crawler robots, and has a passability that conventional four-wheel robots cannot expect. By carrying additional first aid kits and tool kits, the work efficiency of fire rescue can be greatly improved, timely rescue can be provided for the wounded trapped in the fire scene, and firefighters can be assisted to carry out fire fighting work. The modified field fire fighting robot can be equipped with industrial cameras that specifically identify flames, 3D lidar and other modules. Firefighters control the fire-fighting robot through the remote controller, which allows the fire-fighting robot to enter the automatic fire-fighting mode with one key. The fire-fighting robot builds a map in real time according to the 3D radar, recognizes the flame through the camera, then automatically moves to the vicinity of the flame, and launches special projectiles equipped with fire-fighting materials, thus accurately extinguishing the fire, reducing the workload of firefighters and reducing the risk of firefighters' work.