Abstract: Aerospace model engineering is a large-scale，comprehensive and complex system engineering，as the technical basis of model development，the level and efficiency of model development is improved by metrology.Combined with the content of metrology in the aerospace model development workflow,the necessity of model metrologist system construction is analyzed,the idea of building the model metrologist system is put forward，the specific composition and main responsibilities of the model metrologist system is studied，the significance of establishing a model metrologist system is analyzed.The construction method of the aerospace model metrologist system will be referenced for all military industries.

Key words: Metrology, Technical basis, Model management, Model metrologist system