Abstract: Based on the theoretical model of Stevens language teaching process,this paper studies the ecological elements of medical English teaching and their relationship,and investigates the strategies for optimizing each element,from the perspective of educational ecology,in order to improve medical English teaching in medical universities,and to meet social needs for excellent physician education and training.The results show that policy made by both the government authority and the university,language teaching and education theories,teaching objectives,teaching methods,curriculum,teaching resources,construction of teaching staff,learner characteristics and education evaluation are all elements in medical English teaching ecological environment,and they are in complementary relation.Only with all elements optimized a sustainable medical English teaching ecology could be built and ultimately contribute to the cultivation of high-quality medical staff.

Key words: Educational ecology, Medical English teaching, Ecological elements