The so-called lawyer's testament witness refers to an activity in which a lawyer reviews and proves the authenticity and legality of a will according to law in the name of the law firm and the witness lawyer, according to his own personal experience and on the application of the parties.
 According to the law, in the absence of sufficient evidence to the contrary, the people's court can directly determine the true basis based on the content of the witness, which has strong legal effect. Its characteristics are:
 1. The main body of lawyer's testament witness is lawyers and law firms. Lawyers' testamentary testimony is different from notarization, which is implemented by the notary office on behalf of the state, with the color of government intervention. The witness is made by the lawyer according to the entrustment of the client and the intention of the client. It is the expression of the true intention of the client. Its proof effect is not only strong, but also its neutral position can be trusted by both parties. Lawyer witness is a very mature business in foreign countries.
 2. Lawyer's testamentary testimony is a kind of application of law. In other words, the lawyer should confirm the authenticity and legality of the will requested by the client according to the effective current laws, regulations and policies.
 3. The lawyer's testament witness has strict time and space limits. A lawyer must see with his own eyes when the witnessed matter occurs before he can testify.