Embodiments of the present disclosure provide a data migration method and apparatus. The method includes: receiving a migration task of migrating data in a first system to a second system; and calling upper-layer interfaces corresponding to the migration task, and calling underlying operation interfaces of the first system and the second system by the upper-layer interfaces through an abstract interface class to migrate the data of the first system to the second system. Bidirectional data transmission and migration can be implemented between any two data ends. Bidirectional data transmission and migration between any data terminals.