ContentsAbstract..................................................................................................................I摘 要..............................................................................................................IIIntroduction...........................................................................................................11 Literature Review...............................................................................................31.1 Peer Assessment..........................................................................................31.2 Theoretical Framework...............................................................................51.3 Previous Researches on Teaching English Writing...................................101.4 Related Researches on Peer Assessment in English Writing....................112 The Problems with Peer Assessment in English Writing.................................172.1 Superficiality of Assessment.....................................................................172.2 Disapprobation of Assessment Contents...................................................182.3 Negative Assessment Attitude...................................................................192.4 Focusing Too Much on Results.................................................................203 Analysis............................................................................................................213.1 Lack of Specific Assessment Objectives...................................................213.2 Differences in Students’ Second Language Proficiency...........................223.3 Lack of Affirmative Assessment...............................................................233.4 Ignoring the Learning in the Assessment Process.....................................234 Suggestions...........................................................................