There are four kinds of wills: self written wills, notarial wills, oral wills and written wills. You can choose any form. First, one person has one will, and the number of heirs can write several wills. Don't write them all together. Second, the content is mainly housing inheritance. You should know how much you own in this house. Only the part you own can be disposed of. If you dispose of others' shares, the part you dispose of others' shares is invalid. Write down the location of the house clearly If the basic information such as the house property certificate number and the decedent is too old or not very conscious when writing the will, it is difficult to show that writing the will is your true declaration of intention, and disputes are likely to occur in the future, it is better to make a notarized will or consult the China Wills Bank.