Abstract: Based on the systematic summary of metallogenic geological conditions and ore-controlling factors of selenium resources at home and abroad, the paper screens the potential associated Se resources in Heilongjiang Province, makes a preliminary evaluation of associated Se through GIS, and comprehensively analyzes the metallogenic potential of associated and independent Se deposits, to provide scientific basis for Se anomaly source tracing in the province. It is considered that Se resources in the study area have great prospecting potential, requiring further research and development.