The invention relates to a 
system and method for 
synchronizing discrepant data of a common domain between databases. The method includes the steps that the discrepant data are read, related configuration information of a data table is inquired according to discrepant 
data information, and a first search condition is generated according to the related configuration information; whether the discrepant data exist or not is searched for at the common domain of the two databases according to the first search condition, and accordingly search results are recorded; baseline information of the discrepant data is inquired according to the discrepant 
data information, and a second search condition is generated according to the baseline information; a stored 
record of the discrepant data is searched for in a baseline 
library according to the second search condition, a needed 
SQL statement is formed according to the second search condition and the searched stored 
record of the discrepant data in the baseline 
library, and the data of a non-baseline 
library are modified through the formed 
SQL statement by using the 
record of the baseline library as the baseline. By the adoption of the 
system and method, data synchronous 
processing effectiveness is guaranteed, data synchronous accuracy is improved, and mistakes and hidden risks caused by negligence of operators are reduced.