Responsible for the criminal investigation of criminal crimes and other cases in the region, assisting other provinces, cities and counties in detecting cases and chasing criminal suspects in Yulin area, studying and understanding the situation of criminal activities in the region, and formulating prevention and crackdown measures Countermeasures against crimes, master the basics of criminal investigation work and criminal investigation techniques, provide on-site investigation and technical services to grassroots units, implement technical investigation work guidelines and policies, guide the collection and management of technical investigation intelligence information, train technical investigation teams, and provide technical investigation equipment equipped. Conduct inquests, searches, seizures, appraisals, freezes, and trials of crime-related places, objects, people, and corpses in accordance with the law, be responsible for transferring cases with sentences of life imprisonment or more for prosecution, and be responsible for conducting criminal intelligence, criminal investigation bases, and special criminal circumstances. Provide guidance and inspection of the criminal technology and network business construction of grassroots units, organize business training, promote new criminal technologies and methods, and provide technical services for the investigation of crimes.