Abstract: A method and a system for processing engineer-designed data are provided. A data receiving/transmitting module receives engineer-designed data from an engineer design department upon receiving a data receiving request from a user through a network terminal device via a network communication system. Then, a data comparison module compares the received engineer-designed data with associated engineer-designed data stored in a database to obtain consistent engineer-designed data. A file producing module transforms the consistent engineer-designed data into a document file in a specific format. The data receiving/transmitting module transmits the transformed document file to an engineer unit corresponding to an engineering stage where the document file is formed. Finally, a data storage module stores the document file confirmed by the engineer unit in the database.