Legal analysis: In order to protect the rights and interests of the testator, if the testator has no writing ability or can't write his own will, the testator is allowed to be written by others under the circumstances permitted by law. The valid conditions of proxy will are as follows: 1. It must be the testator's voluntary oral will; 2, there must be more than two people present to witness; 3. There must be the signatures of the testator and testator and the year, month and day.

Legal basis: Civil Code of People's Republic of China (PRC).

Article 134 A self-made will shall be signed by the testator and marked with the year, month and day.

Article 135 A will written by an agent shall be witnessed by two or more witnesses, one of whom shall write on behalf of the testator, agent and other witnesses, and shall be signed by the testator, agent and other witnesses, indicating the year, month and day.

Article 136 A printed will shall be witnessed by two or more witnesses. The testator and the witness shall sign on each page of the will and indicate the year, month and day.

Article 137 If a will is made in the form of audio and video recording, two or more witnesses shall be present to witness it. The testator and the witness shall record their names or portraits, as well as the year, month and day by audio and video recording.

Article 138 A testator may make an oral will in an emergency. An oral will shall be witnessed by two or more witnesses. After the emergency is eliminated, if the testator can make a will in writing or in the form of audio and video recording, the oral will made is invalid.