Based on Diamond Model,this paper analyzes the productive factors,demand constraints,related industries and supporting industries,business strategy and competition,external environment and government policies of new energy vehicle industry in China.Based on this,it gives countermeasures on improving the competitiveness of China 's new energy vehicle industry,including that we should make a long-term development strategy,strengthen research and development ability,encourage technical innovation,accelerate related infrastructure construction,establish related technical standard systems and form enterprise cluster effect.