Abstract: With the rapid growing of imported LNG in China, the construction of LNG terminal and the determination of LNG tank capacity become significant. The authors consider that the tank capacity of LNG is directly related to the reception of LNG and pipelining, and the economy of investment and operation as well. Due to the storage characteristics of LNG receiving stations, its storage capacity will be influenced by a number of factors, which include the transportation schedule of LNG carrier (LNGC), pipelining program of LNG and work performance of LNG receiving station. On the basis of analysis, the influencing factors for tank capacity and calculation method of tank capacity are determined, and discussion on different calculation methods is made in the paper.