This paper discusses the characteristics of the national credit bank of vocational education,including the specialization of the operation field,the refinement of the achievement recognition,the refinement of the achievement conversion,and the scientific professional training.Compared with lifelong education credit bank,this paper points out three problems in the construction of national credit bank of vocational education,including single type of learning achievement,lack of credit mutual recognition system,and difficulty in corresponding with the construction of national qualification framework.By learning from the successful experience of lifelong education credit bank,this paper puts forward some measures to improve the construction of national credit bank for vocational education.