本文详尽地阐述了在海滩滩涂、沼泽等特殊地域的地表条件下各种行走机构的通过性，介绍了国内外新型气垫运载工具，提出了利用气垫技术的良好通过性和大牵引力刚轮推进相结合的新颖运载、牵引工具──气垫两栖牵引车。气垫两栖牵引车是具有广泛应用前景的运载工具和牵引器，在海滩滩涂、沼泽等软地面地域具有不可替代的合理性，本文在大量试验的基础上作了分析比较，最后提出了工程应用方案。 This paper elaborates on the passage of various walking mechanisms under the surface conditions such as beaches, marshes and other special terrains, and introduces the new air cushion vehicles at home and abroad, puts forward that the adoption of the air cushion technology and the good traction of the rigid wheel propulsion phase Combining the new carrying, towing tools ─ ─ air-cushion amphibious tractor. The air-cushion amphibious tractor is a vehicle with a wide range of application prospects and a tractor. It has irreplaceable rationality in soft ground areas such as beaches, swamps and so on. This article makes analysis and comparison on the basis of a large number of experiments, and finally proposes the engineering application scheme .