化探从30年代初在苏联和北欧一些国家试行以来，在战后有迅速地推广和发展。作为一门逐渐成熟的应用学科，化探一般包括自己的理论基础、工作方法、分析技术和资料解释运用四部分。国外近年来在区域成矿理论和测试、计算技术方面有很大发展，对化探有重要影响。最明显的是使化探工作的效率和自 Since the early 30s, when the exploration of the geogas was piloted in the Soviet Union and some Nordic countries, it was rapidly promoted and developed after the war. As a mature application discipline, geochemical exploration generally includes its own theoretical foundation, working methods, analytical techniques and data interpretation and application of four parts. In recent years, foreign countries have made great progress in regional ore-forming theory, testing and calculation technology, and have an important influence on geochemical exploration. The most obvious is to make the geochemical work efficiency and self