There are different opinions concerning the formation of geothermal field high temperature in geothermal research and the problem as to why there is a low temperature gradient in the deep part of the geothermal field. In this paper, the authors analyzed the influencing factors of geothermal field proposed by previous researchers, and adopted geothermal field forward modeling method to study two situations, i.e., anomalous heat sources heating magma pocket and heat transfer without heat source. The authors h...