Centralized bank-securities transfer service (hereinafter referred to as "bank-securities transfer") refers to the self-service fund transfer service provided by banks and futures companies for futures investors on the basis of their system networking, so as to realize the directional real-time transfer of funds between their bank settlement accounts and futures margin accounts. Banks and futures companies provide inquiry services for customers through their own channels. Generally speaking, customers can handle the corresponding transfer inquiry business through telephone banking, online banking and other channels provided by banks, and can also handle the transfer inquiry business through channels provided by futures companies.