In recent years, inheritance disputes have increased, and more and more people have made wills. Although some of the decedents have made wills, their wills have been deemed invalid by the court. So what are the conditions for a will to be valid? (1) The testator must have full civil capacity. Article 41 of the "Several Opinions of the Supreme People's Court on the Implementation and Execution" stipulates that the testator must have capacity when making a will. A will made by a person without civil capacity will still be invalid even if he later gains capacity. If the testator had capacity when making the will but later lost it, the validity of the will will not be affected. "Adults with physical defects such as deafness, muteness, blindness, etc. but without mental illness have full capacity, so they can also make a will. (2) The will made by the testator must be his true expression." Paragraphs 2, 3, and 4 of Article 22 of the Succession Law of the People’s Republic of China stipulate: “The will must express the true intention of the testator, and a will made under coercion or deception is invalid. A forged will is invalid. If the will is tampered with, the tampered content will be invalid. "(3) The testator must have the right to dispose of the property disposed of in the will. (4) The content of the will must be legal. It can be notarized, self-written, written on behalf of others, recorded, orally. Legal basis: "The Supreme Court" "Some Opinions of the People's Court on Implementation" Article 41 The testator must have legal capacity when making a will. A will made by a person without civil capacity will still be invalid even if he later gains legal capacity. If a person has capacity when making a will but later loses it, the validity of the will will not be affected.