Legal analysis: The withdrawal of a case does not necessarily require the signatures of both parties. For cases involving victims, if the People’s Procuratorate decides not to prosecute, the People’s Procuratorate should send a decision not to prosecute to the victim. There is no requirement to sign. . If the victim is dissatisfied, he may appeal to the People's Procuratorate at the next higher level within seven days of receiving the decision and request a public prosecution. For civil cases, the plaintiff can apply to withdraw the case, and the court will decide whether to approve the withdrawal.

Legal basis: "Criminal Procedure Law of the People's Republic of China" Article 180: For a case involving a victim, if it is decided not to prosecute, the People's Procuratorate shall send a letter of decision not to prosecute to the victim . If the victim is dissatisfied, he may appeal to the People's Procuratorate at the next higher level within seven days of receiving the decision and request a public prosecution. The People's Procuratorate shall inform the victim of the review decision. If the People's Procuratorate upholds the decision not to prosecute, the victim may file a lawsuit in the People's Court. The victim may also file a lawsuit directly with the People's Court without filing a complaint. After the People's Court accepts the case, the People's Procuratorate shall transfer the relevant case materials to the People's Court.