我国刑事诉讼法第一百三十七条规定:“第二审人民法院审判被告人或者他的法定代理人、辩护人、近亲属上诉的案件,不得加重被告人的刑罚。人民检察院提出抗诉或者自诉人提出上诉的,不受前款规定的限制。”刑事诉讼法的这条规定,就是我们平常说的“上诉不加刑”原则。这个原则说明,被告人一方上诉的案件,二审法院即便认为原判量刑畸轻,也不能改判加重刑罚。立法的意图在于保护被告人的上诉权利,解除被告人一方因怕上诉加重刑罚而不敢上诉的顾虑。同时,这也加重了人民法院和人民检察院的责任,从诉讼程序制度上 Article 137 of the Criminal Procedure Law of China stipulates: “No case appealed by the people’s court of second instance in trial of the accused or his legal representatives, defenders or close relatives shall not aggravate the penalty of the defendant.” The people’s procuratorate initiated a protest or a private prosecution The people who make an appeal are not subject to the restrictions set forth in the preceding paragraph. “This stipulation of the Criminal Procedure Law is what we usually say:” no penalty for appeals "principle. This principle shows that in the case of an appeal by the defendant, the court of the second instance can not impose a heavier sentence even if it considers the original sentence to be extremely lenient. The intent of the legislation is to protect the defendant’s right of appeal and relieve the defendant of the fear of appealing for fear of aggravating the appeal. At the same time, this also aggravates the responsibility of the People’s Court and the People’s Procuratorate. From the procedural system