Autonomous learning is a modern learning method for learners to manage their own learning behavior.Driven by the transformation of higher education and the demand of new military talents in the army,higher autonomous leaning ability and motivation are required for military cadets.For the badly need of the talents for the army,how to evaluate learning motivation is an important research topic.In this paper,the connotation and constituent elements are firstly studied.And then measuring model and questions are structured based on CCSS.Finally,the validity of the model is proved by using the measurement results of the cadets in one military academy,thus providing reference for the measurement of the motivation level of learning autonomy.