民事再审申请书是指民事诉讼中的当事人认为已经发生法律效力的民事判决、裁定确有错误，向原审人民法院或者上一级人民法院提出申诉，请求再审所提交的书状。根据《中华人民共和国民事诉讼法》（以下简称《民事诉讼法》）第１０条的规定，人民法院审理民事案件实行两审终审制 The civil retrial application refers to the civil verdict in the civil litigation that the litigant believes the law has taken effect and the ruling is found to be in error and a petition to the trial court or the people’s court at the next higher level asking for retrial of the pleadings. Pursuant to Article 10 of the Civil Procedural Law of the People’s Republic of China (hereinafter referred to as “Civil Procedure Law”), people’s courts handle civil cases through trial of second instance