The oral English becomes more important in our daily life,but some people can’t pronounce correctly.The improper accent can make us confused in communication,so we should pay more attention to pronunciation.According to the SLA,the phonological experience can influence the development of children’s second language,including the students in junior high school.Because of the limited environment,most students speak Chinese/dialect after class.So their mother tone has obvious influence on their English pronunciation. The oral English becomes more important in our daily life, but some people can not pronounce correctly. The improper accent can make us confused in communication, so we should pay more attention to pronunciation. According to the SLA, the phonological experience can influence the development of children’s second language, including the students in junior high school.Because of the limited environment, most students speak Chinese / dialect after class.So their mother tone has obviously influence on their English pronunciation.