Abstract In our experiment,we strived to find our how to improve persuasion by building up the appropriateness between the identity of persuader and the content of advertisement.We also conducted a follow-up study.The hypothesis was that people in a group have strong social bond and unconsciously want to appear cooperative to their group members Study 1 Hypothesis People would be more convinced to offer help if the persuader was relevant to the issue.Method Subjects We randomly sampled 160 shoppers in Shanghai,half of whom we selected from a high-end store named Jing An Kerry Centre and half from a low-end store named Reel Shopping Mall.We further equally divided the shoppers in two shopping malls into several subgroups.The table below can effectively present how we intentionally classify these subgroups.