Abstract: A system dynamics (SD) model system for the development and utilization of Xinjiang land resources was established in terms of SD principles as the limitation, non-replacability and dynamic development feature of land resources. The system consists,of the following seven subsystems: ① population development, ② water resources development and utilization, ③ crop planting development, ④ forest development, ⑤ animal husbandry development, ⑥ the variation of the land resources used for city and town expansion, ⑦ the variation of the land resources used for transportation installation (highway) construction. The paper mainly presents the idea for constructing the model, and taking the crop planting development subsystem as an example, describes the -subsystem in detail and gives the results of the subsystem.