The invention discloses a spacecraft attitude tracking low-complexity preset property controlling method. The method includes the following steps: firstly establishing a spacecraft attitude tracking motion model, presetting property index design, conducting non-linear mapping on an attitude tracking controlling model, and finally designing a model-free robust controller. According to the invention, the method can control spacecraft attitude tracking if an inertia matrix is unknown and unknown ambient interferences are contained. Since the designed controller does not rely on specific system model and has strong robustness, the model-free control method has more theoretical significance and high potential in engineering. According to the invention, the controller does not require calculation process with high complexities, such as parameter identification and iteration and optimization, and obviates the need for tedious parameter adjustment, so that the designed controller has low complexity. The low-complexity characteristic of the method enables the controller to conduct online calculation and better meet real-time calculation requirements for spatial tasks in nowadays.