Some of the most interesting and challenging regions for application the Ground-Penetrating Radar (the GPR) method are areas of active volcanism. The large thickness of the soil pyroclastic cover, polygenetic soil profiles, a significant number of buried soil horizons separated by tephra layers of different granulometric composition and age, on the one hand, create good conditions for the formation of clear lines of equal phases of reflected signals (phase axes) on the GPR profile, and on the other hand, complicate their interpretation. The existing experience of application the GPR method in areas with active volcanoes is small. Many aspects of application the GPR method in volcanic areas remain insufficiently studied. All this determines the relevance of the study. This paper presents the results of long-term research application the GPR method in areas of active volcanism in Kamchatka, as well as on Paramushir Island (Kuril Islands). For the first time, ground penetrating radar facies have been identified in the area of some volcanoes. This touches upon current issues of the genesis of volcanic deposits, which helps to clarify the nature of volcanic activity in the study area. The GPR method makes it possible to study in detail the upper part of the geological section with the determination of the thickness of the layers, as well as the identification of ground penetrating radar facies, which contributes to the study of the process of relief formation in areas of active volcanism.