The invention discloses a vehicle posture adjusting system utilizing precise drive control, comprising a controller (1) and four vehicle posture adjusting servo executing units, wherein the four vehicle posture adjusting servo executing units are connected with the controller (1) and are respectively arranged by being corresponding to the positions of four wheels; the four vehicle posture adjusting servo executing units are same in structure, each four vehicle posture adjusting servo executing unit comprises a hydro-pneumatic spring (5), the hydro-pneumatic spring (5) is arranged on the chassis by being corresponding to the position of each wheel, and oiling and deoiling of the hydro-pneumatic spring (5) are controlled by the controller (1), so as to realize lifting of the chassis. Compared with conventional hydraulic systems, power is supplied for the system in a manner of replacing a hydraulic pump station with an electric cylinder, an overflow unit in a conventional hydraulic systemis eliminated, and the energy utilization rate is relatively high.