A ground-penetrating radar (GPR) survey was conducted at the end of August 2009 in the suburb region of Ulaanbaatar, Honhor basin, Mongolia, in combination with conventional methods such as borehole drilling and mea-surement of ground temperatures. The interface of frozen and unfrozen sediment was distinctly resolved in the inter-preted GPR images, verified by the borehole drilling records and 6-month measurement of ground temperatures. The location of the permafrost table was assessed to be at the depth of 2–4 m in the study region. A conspicuous ice-saturated soil layer (massive ground ice) was detected in the interpreted GPR images with a thickness of 2–5 m. The GPR investigation results were consistent with the borehole dril-ling records and ground temperatures observation. The borehole logs and ground temperatures profile in the bore-hole indicates that permafrost at Honhor basin is character-ized by high ground temperature and high ice content, which implies that ongoing climatic warming would have great influence on permafrost dynamics. The research results are of great importance to further assess permafrost dynamics to climatic change in the boundary of discontinuous and spo-radic permafrost regions in Mongolia in the future.