The invention discloses a data cross-platform migration method and a data cross-platform migration device, which are used for 
data migration between different 
database systems. The device comprises a 
source data information module, a target 
data information module, a conversion module, an 
SQL (Structured 
Query Language) Engine, a data packet encapsulation, transmission and analysis module and an 
SQL statement execution module. The information on a 
source data platform and the information on a target 
data platform are described through the 
source data information module and the target 
data information module, a table is acquired from the source 
database to generate a Table object, the Table object is subjected to format conversion by the conversion module according to an 
XML (
Extensible Markup Language) file for describing the mapping relation of fields between the databases, the converted information is constructed into an 
SQL statement by the SQL Engine, the SQL statement is encapsulated and transmitted to the platform where the 
target database is positioned, and the SQL statement is executed on the target platform to finish 
data migration. The method and the device realize smooth and lossless migration of the data between different databases of a heterogeneous platform.