Deep learning in blended learning environment is one of important research issues in the field of educational technology, and a large amount of research work has already done. However, from the perspective of topic selection, most studies focus on the concept, characteristics, mechanism, model and supporting technologies of deep learning, while there are relatively few studies on "quality measurement of deep learning", especially those on "deep learning scale in blended learning environment". A workman must (first) sharpen his tools if he is to do his work well. The lack of scale will certainly affect the quality of research. Therefore, according to the scientific scale-compiling program, this paper develops the college students' deep learning scale for blended learning environment. This scale consists of 36 measurement items, involving deep learning motivation, deep learning engagement, deep learning strategy and deep learning result. The results of retest show that the Cronbach coefficient of the scale is 0.971 and the CFA fitting index is good, which indicates that the quality of the measurement scale is high .