The embodiment of the invention provides a data processing method and device. The method comprises the following steps: according to a target access address in a data processing configuration file, batch-reading data to be processed one by one from a target database server corresponding to the target access address; assigning read data to be processed one by one to a plurality of data processing threads whose total number is the same as the number of thread concurrency according to the number of thread concurrency in the data processing configuration file; controlling a plurality of data processing threads to process the data to be processed one by one in parallel to obtain a feedback data file corresponding to the data to be processed one by one; writing the obtained feedback data files into the target database server in batches. The data processing method can share the task pressure of processing data item by item in a database in batch, realize and process data item by item efficiently, so as to expand the application scene range of the database.