A message posted by a member of Dcard community, and then more discussion and messages posted. Most messages agreed the original posted message and will hurt the target firm. The firm be forced to post a video to recognize the messages described and for apology on Youtube. The case study to disclosure several decision-points to make suitable response for messages posted on community. How to make suitable response for any message posted which may be unfavorable? To observe and analysis the messages posted are the necessary to active in a specific community. To observe more 3900 messages, the message posted and response will be stimulated the following posted. How to decrease the posted and control the status? The study reveals several research fields for the following study which included that how to response the resentful massages, how to utilize and converge the professional talent from the specific community, and how could response and control for avoid the risky issue.