According to the Regulations of the People's Republic of China on the Administration of Administrative Divisions and the Regulations of Jilin Province on the Administration of Administrative Divisions, the Civil Affairs Bureau is the grass-roots government organization of this Municipality and is responsible for the management of social affairs in this Municipality. Left-behind children belong to the category of urban social affairs, so Baicheng Sanqing rear office is under the jurisdiction of Baicheng Civil Affairs Bureau.

For the management of the Sanguang rear office in Baicheng, it is necessary to establish and improve the service system for left-behind children to ensure that their basic rights and interests are guaranteed. Specifically, we can start from the following aspects:

1. Establish information collection and statistics system for left-behind children, grasp the actual situation of left-behind children, and provide basis for formulating relevant policies and services.

2. Improve the psychological counseling mechanism for left-behind children, and carry out psychological counseling and psychological intervention to help left-behind children solve their psychological problems.

3. Strengthen the education security of left-behind children, establish and improve the education funding mechanism for left-behind children, and ensure that left-behind children can receive a good education.

4. Actively carry out cultural activities for left-behind children, enrich their after-school life and enhance their physical and mental health.

To sum up, Baicheng Sanqing Houban is subordinate to Baicheng Civil Affairs Bureau, so we should strengthen the construction of the service system for left-behind children and effectively protect their basic rights and interests.