Abstract: This study aims at investigating，by quantitative research study，the use of language learning strategies of 106 Professional School Students in Yunnan Agricultural University.The results show that，their frequency of strategy use is low；differences in the use of learning strategies between highscore learners and lowscore ones are great；among all the learning strategies，both highscore learners and lowscore ones use memory strategy in the lowest frequency，and the lowscore ones are much lower than the highscore learners.