According to the relevant provisions of the inheritance law, the forms of wills are divided into self-written wills, proxy wills and notarized wills. An illiterate old man can't write his own will, so he can't write his own will. They can set up proxy wills, witness wills or notarized wills according to law. (1) Notarization of wills. When applying for notarization of wills, the testator must personally go to the notary office with the text of wills, household registration book, work permit and property right certificate. If you can't go to the notary office in person due to illness or other reasons, you can ask the notary to go to the place where the testator is located. (2) Testament. A will written by an agent is usually completed when the testator is unable to write or is unable to write due to illness. However, in order to ensure that the will written by the ghostwriter is really the true meaning of the testator and reduce disputes, there should be more than two witnesses present to witness it, one of whom will write it, indicating the year, month and day, and the ghostwriter, other witnesses present and the testator will sign the will. (3) record the will. According to the law, a will made in the form of audio recording shall be witnessed by more than two witnesses to prove the authenticity of the will. (4) verbal will. The testator can only make an oral will in an emergency, and there must be more than two witnesses present. After the state of emergency is lifted, if the testator can make a will in written or recorded form, he shall make a will in written or recorded form, and the oral will made shall be invalid. Legal basis: Article 17 of the Law of People's Republic of China (PRC) on State Succession. Notarization of wills shall be handled by the testator through the notary office. A self-made will is written and signed by the testator, indicating the year, month and day. A will that entrusts others to write on behalf of others shall be witnessed by two or more witnesses, and one of them shall write on behalf of others, indicating the year, month and day, and shall be signed by the agent, other witnesses and the testator. If a will is made by recording, there shall be two or more witnesses present. 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 lifted, if the testator can make a will in written or recorded form, the oral will made is invalid.