Social workers help migrant left-behind children and strengthen the significance of case work to the elderly.

1. Promote social integration: Social work can help migrant left-behind children and the elderly understand and adapt to the new environment, establish good interpersonal relationships and improve their social adaptability.

2. Protection of rights and interests: Social work can pay attention to and protect the rights and interests of migrant left-behind children and the elderly to prevent them from being treated unfairly and discriminated against.

3. Improve self-ability: Social work can improve the self-ability of migrant left-behind children and the elderly through training and education, and enhance their sense of self-worth and self-confidence.