The invention discloses a suspension type six-degree-of-freedom micro-gravity environment simulating system. The suspension type six-degree-of-freedom micro-gravity environment simulating system comprises a simulation spacecraft, a space three-dimensional driving follow-up unit, an attitude follow-up and fixing unit, a buffering and sensor mounting unit and a control unit. The space three-dimensional driving follow-up unit follows the position motion of the spacecraft and compensates for the gravity borne by the spacecraft. The attitude follow-up and fixing unit can follow the attitude adjusting motion of the spacecraft and can keep the existing attitude of the spacecraft after the attitude of the spacecraft is adjusted. The buffering and sensor mounting unit comprises a buffering module and a sensor mounting measurement module. By means of the buffering module, the gravity compensation precision is improved for the system based on the property that force on a spring cannot change instantly. The sensor mounting measurement module comprises a wireless tilt angle sensor and a tension sensor, and closed-loop control over the system is achieved. The control unit controls motion of a servo motor according to the measurement results of the sensors, and follows motion of the spacecraft actively.