Mind map is a visible diagram of picture to inspire divergent thinking in order to fulfill one’s potential. Mind map plays a critical role in the development of students’ creativity and thoughts. This essay applies the mind map to English vocabulary teaching in junior high school, analyzing the concept of mind map and the present situation of mind map research in vocabulary teaching, discussing the advantages of using mind map to teach English vocabulary and then putting forward some strategies of applying mind map to English vocabulary teaching in junior high school.