The limitations of the child’s abilities are unstable and not as impeccable as adult people in discovering their identity, as well as their situations that exist outside the child. Those situation are frequently the cause of a child commiting a crime. The protection of children is a foundation of the Juvenile Justice System because prison is not a place for the children. The necessity of children is education and direction. This research aims to analyze the legal protection of children offenders during the Investigation in the Katingan Subregional Police. 
This research type is empirical legal research and field research, conducted on the actual situation using primary data in the form of interviews and document studies.
The result of the research proves that legal protection for children in the investigation process at the Katingan Subregional Police is based on the theory of legal protection, and the theory of punishment through diversion given based on restorative justice has been fulfilled. However, some rights have not been fully accomplished in implementation process. The children’s rights are the right to be promptly investigated, the right to be separated from adult detainees, the right to receive consideration and/or advice from a social advisor, the right to acquire legal assistance, and the right to deliver the information freely.