Vocabulary can be regarded as an absolutely necessary part of language learning. Since the late 1970s, there have been a great lot of researches by native English learners on English vocabulary mnemonic strategies. Recently, many experts who are in the field of second language acquisition have been studying and researching all kinds of mnemonic strategies. But few researches focus on the study of the use of mnemonic strategies by non-English majors. Therefore, this investigation study focuses on the use of mnemonic strategies and the relevance between the strategies and the vocabulary grades. This study will investigate some subjects by means of a questionnaire survey to collect explicit data. And by analyzing the relevance between the strategies and the grades, this study can provide some effective suggestions about vocabulary learning. According to the research, the strategy used most frequently is repetition strategy. Because of the influence of traditional language learning theory, most students choose to use repetition strategy. And we can get that students should try more strategies to memorize words and teachers also should introduce more strategies to students.