Social media is gradually embedded in the legal profession，at the same time bring benefits to legal professionals，also led to a number of risks. In the development process of China and the United States legal profession，the legal ethics risks arising from social media include：breach of confidentiality obligations，violations of lawyer advertising rules，resulting in improper contacts with the judiciary. The All China Lawyers Association can learn from the useful experience of the New York State Bar Association and combine the actual situation of the Chinese legal profession，revise the Code of Conduct for Practicing Lawyers，or develop the Code of Conduct for Lawyers’ Social Media. In the process of amending or enacting rules，the Bar Association should aim at “promoting and encouraging the social media to achieve legal and effective use in legal profession”，adhere to the following six basic principles：independence，integrity，responsibility，confidentiality，confidence，policy. These six basic principles are also principled guidelines for lawyers（law firms）in the use of social media.