The second file of Shenzhen medical insurance can only be bound to the social health center, but not to the top three hospitals?

Yes, it's a rule in Shenzhen. The second-class medical insurance in Shenzhen cannot be bound to any hospital, and the second-class medical insurance can voluntarily choose to bind to social health, but it cannot bind to hospitals. You can only bind the lower social health centers of the top three hospitals. If you want to go to a third-class hospital for medical treatment, you have to go to the bound social health center to open a referral form before you can swipe your social security card for medical treatment. Binding social health can be operated directly on the self-service machine of social health.