Abstract: In order to further expand the resources of a gold mining area in Henan Province and improve the efficiency of resource metallogenic prediction，a new metallogenic prediction system was constructed.The system was developed based on ArcGIS software platform and C language.The system metallogenic prediction process was divided into four parts:data model establishment， prediction model construction，model information extraction and mineral resource prediction.By collecting the basic geological conditions and exploration data of the study area， the database was established and the correlation between sub-databases was established.Based on the characteristics of strata，lithology and magmatic rocks in a gold mining area in Henan Province，the new metallogenic prediction system was applied to the mining area，and the metallogenic target area was classified into A，B and C in the order from high quality to general through the extraction of predictive variables，calculation of weight coefficient and calculation of metallogenic favorability value.Among them，the target area of level A is the unit with the metallogenic favorability value from 1.19 to 2.51，the target area of level B is the unit with the metallogenic favorability value from 2.51 to 3.83，and the target area of level C is the unit with the metallogenic favorability value greater than 3.83.The location，area and other information of each target area were obtained through the mineralization prediction of the constructed system，and the comparison with the existing information showed that the delineated target area has higher reliability，which reflects that the mineralization prediction of the constructed system has certain reliability.

Key words: gold mine, metallogenic prediction, database, metallogenic favorability, delineation of target area