The power of attorney for investigation refers to a power of attorney issued by the relevant institution or individual to the procuratorial organ, with the purpose of asking the procuratorial organ to conduct social investigation. This kind of power of attorney usually includes the purpose of entrustment, the content and scope of investigation, the investigation period, the contact information of the entrusting party and so on. The entrusting party may be a government department, an enterprise or institution, a law firm, an individual or any other organization. The purpose of power of attorney is usually to obtain the results and data of social investigation to support the trial of related cases, the formulation of legal policies or the basis for decision-making. After receiving the power of attorney for investigation, the procuratorate shall organize relevant personnel to conduct social investigation according to the entrustment requirements and legal provisions, and submit the investigation report or conclusion to the entrusting party. The power of attorney plays an important role in judicial and social management, helping all parties to obtain objective social conditions and data and providing a basis for solving problems.