Abstract: The peak shaving function for the links in storage chain and the gas supply reliability become more and more important with the increment of gas consumption year by year: It describes the two storage methods of natural gas (gaseous form and liquid form), the basic guidline in tank construction (safety and economy land the decision method of storage volume; it introduces the features and applicable conditions for underground and/or aboveground tanks in handling the natural gas with gaseous form. It points out that the metal of LNG tank has to provide a low-temperature toughness (around -162 ℃) and a smaller thermal coefficient of expansion, and this kind of tank should provide a perfect thermal insulation and thorough protective measures. The paper describes all kinds of LNG tanks and puts forward some suggestions for the construction and development of these tanks.