query by work unit, by household registration department and by social security.

1. Inquire through the work unit: Migrant workers working in construction, catering and other industries can consult the relevant person in charge of the work unit to confirm whether they are migrant workers.

2. Inquire through the household registration department: bring your ID card to the labor and employment bureau where your household registration is located.

3. Inquire through social security: Bring your ID card to the business hall of the social security agency to inquire.