The invention discloses a data source display method for comparing sender and receiver of SCD file. As the version's identification, the last version revision data of the original version of the plant's SCD read and received, forms the first set of information sheet inside the database through the re-construction and elements analysis on the SCD file model structure; receive the SCD files to be compared for the intelligent power plant to carry out data analysis thereon to form the second set of information sheet with the property identification of comparison; carry out comparison on each element of the SCD files of various versions; record the information changes on the smart receiving terminals connected to the subscribed data of the sending end, comprising the description information and data route; record the information changes on the smart device connected to the subscribed data of the receiving end basing on the results of comparison, comprising the description information and data route; demonstrate the data changes on the sending and receiving ends after the comparison on the SCD files.