1. A lawyer shall submit the lawyer's practice certificate and the certification materials of the law firm;
2. Grassroots legal service workers shall submit the practice certificate of legal service workers, the letter of introduction issued by grassroots legal service and the certification materials that one party is located in this area;
3. The close relatives of the parties concerned shall submit their identity documents and certification materials of close relatives with the client;
4. If the party concerned is a staff member, it shall submit his/her identity certificate and the certification materials of legal labor and personnel relationship with the party concerned;
5. Citizens recommended by the community or unit where the parties are located shall submit their identity documents, recommendation materials and certification materials that the parties belong to the community or unit;
6. Citizens recommended by relevant social organizations shall submit their identity documents and certification materials that meet the conditions prescribed by relevant laws.
Legal basis: Article 59 of People's Republic of China (PRC) Civil Procedure Law entrusts others to represent the lawsuit, and a power of attorney signed or sealed by the client must be submitted to the people's court. The power of attorney must specify the entrusted matters and authority. An agent ad litem must have the special authorization of the client, and can admit, waive or change the claim, make a settlement, file a counterclaim or appeal on his behalf. The power of attorney sent or entrusted by China * * and China citizens living abroad must be authenticated by China * * and China's embassy or consulate in that country; If there is no embassy or consulate, it shall be certified by the embassy or consulate of a third country that has diplomatic relations with the people of China, and then by the people of China and the embassy or consulate of China in a third country, or by the local patriotic overseas Chinese delegation.