Lawyers who undertake legal affairs have the right to collect evidence from relevant units and individuals. However, lawyers do not have coercive power. If the other party does not cooperate, lawyers can apply to the court or relevant judicial organs. Civil cases shall be applied to a court or an administrative organ with administrative functions and powers, and criminal cases shall be applied to the investigation organ for investigation and evidence collection. Civil cases shall be applied to a court or an administrative organ with administrative functions and powers, and criminal cases shall be applied to the investigation organ for investigation and evidence collection. Lawyers have the right to investigate and collect evidence, but there are limits.