Legal analysis: Generally, a power of attorney is not valid unless it is notarized. The power of attorney does not have to be notarized. As long as the client and the trustee have corresponding civil capacity, the entrusted matters are legal, and the client personally signs and confirms the power of attorney, the power of attorney will have legal effect. It needs to be notarized. If foreigners, stateless persons, foreign enterprises and organizations without domicile in China entrust Chinese lawyers or others to represent them in litigation, notarization is required.

Legal basis: "Civil Procedure Law of the People's Republic of China"

Article 59 When entrusting another person to litigate on your behalf, a submission signed or stamped by the client must be submitted to the People's Court. Chapter's power of attorney. The power of attorney must clearly indicate the entrusted matters and authority. An agent ad litem must have special authorization from the client to admit, waive, change claims, conduct settlement, file counterclaims or appeals on his behalf. The power of attorney sent or entrusted by citizens of the People's Republic of China and the People's Republic of China living abroad must be certified by the embassy or consulate of the People's Republic of China in that country; if there is no embassy or consulate, it must be certified by the embassy or consulate of the People's Republic of China in that country. The certificate must be certified by the embassy or consulate of a third country with which the People's Republic of China has diplomatic relations in that country, and then certified by the embassy or consulate of the People's Republic of China in that third country, or by a local patriotic overseas Chinese group.

Article 131: The people's court may entrust a foreign people's court to investigate when necessary. When entrusting an investigation, clear projects and requirements must be put forward. The entrusted people's court may take the initiative to conduct supplementary investigations. After receiving the letter of entrustment, the entrusted people's court shall complete the investigation within thirty days. If it cannot be completed for any reason, a letter must be sent to the entrusting people's court within the above time limit.

Article 264 Foreigners, stateless persons, foreign enterprises and organizations without residence within the territory of the People’s Republic of China entrust a People’s Republic of China lawyer or other person For agency litigation, the power of attorney sent or entrusted from outside the territory of the People's Republic of China and the country shall be certified by the notary authority of the country where it is located, and authenticated by the embassy or consulate of the People's Republic of China and the country in that country, or performed It will only become effective after the certification procedures stipulated in the relevant treaties between the People's Republic of China and the country where it is located.