The invention provides a system capable of actively increasing the adhesion of a vehicle. The system comprises a controller ECU, a normally open solenoid valve, an energy storage device, a shock absorber, a shaft cylinder, a check valve and the like. By using the system capable of actively increasing the adhesion of the vehicle, parts are controlled, so that hydraulic fluid flows in the set direction in the control process, a shock absorber spring of the vehicle is contracted during acceleration and emergency braking by combining the shaft cylinder, the adhesion of the vehicle is increased, and thus safer braking and a higher degree of acceleration are realized. The system can be used repeatedly and reset automatically. The reliability is high, the structure is simple, the maintenance cost is low, the versatility is high, and the structure is durable.