This book covers an overview of the distribution of permafrost in China and its engineering properties as well as its environment protection. Frozen soil engineering of cold regions is the branch of engineering geocryology, alternatively known as a practical discipline of geocryology. It focuses on the measures of line selection, basic design, subgrade treatment and anti-freezing, swelling and sinking of cold regions in construction engineering, subgrade engineering, bridge, culvert and tunnel, water conservancy engineering, pipeline engineering, overhead transmission line engineering and airport construction. Moreover, this book is the latest result of exploration of frozen soil engineering, basic design of subgrade, construction and engineering hazard treatment. It will be a valuable read for both researchers, professionals and graduate students working in frozen soil research, engineering technology, civil construction, environmental engineering and civil engineering.