Abstract: In order to promote the storage validity and utilization efficiency, the database application system of hull structural steel and welding materials is designed and developed by using SQL Server as background database, VB as system development and ODBC data source as connection technology. The system has four functional modules:structural steel information query, welding material information query, standard query and report query. Structural steel welding rod has been taken as an example to test the practicability of the system. The mechanical performance prediction is realized by the construction of the intelligent framework for performance prediction and the neural network model, and the transformation of neural network matrix model into VB code. It has a certain reference and practical value for the design of structural steel and welding materials.