介词在对外汉语教学中一直是留学生学习汉语的一大难点和重点。介词数量繁多、意义丰富，学生接受与教师讲授都存在一定的难度，可见对对外教学中介词的研究是十分必要的。本文拟在整理分析留学生运用汉语介词时出现的偏误句型基础上，找出留学生产生偏误的原因，并提出介词学习的相关教学策略，以提高留学生对介词的掌握与应用能力。 Prepositions have long been a major challenge and focus for foreign students to learn Chinese in teaching Chinese as a foreign language. There are a lot of prepositions and rich meanings. There is a certain difficulty for students to accept and teachers’ teaching. It is very necessary to study the prepositions of foreign teaching. This article intends to find out the causes of errors in foreign students based on the analysis of the patterns of errors that occur when Chinese students use Chinese prepositions and puts forward the relevant teaching strategies of prepositions in order to enhance the ability of foreign students to master and apply prepositions.