Writing legal documents is one of the legal services provided by lawyers. Writing legal documents on behalf of lawyers refers to the professional activities that lawyers write legal documents on behalf of clients according to the facts and evidence provided by clients and the will of clients and the provisions of laws. First of all, the lawyer's writing of legal documents reflects the legal will of the client and is done in the name of the client. The purpose of a lawyer's proxy is to safeguard the legitimate rights and interests of the client. Legal documents written by lawyers usually include complaint, defense, power of attorney, criminal incidental civil indictment, appeal, application for enforcement, cable application for property preservation, application for early execution, application for withdrawal, application for declaration of disappearance, application for declaration of death, application for payment order, application for retrial, prenuptial property agreement, divorce agreement, child support agreement, legacy agreement, application for bail pending trial, etc.