Abstract:According to the specialities of the national economic development and the overall arrangement of its railway networks,the author proposes his consideration on constructing the Xi an-Xiamen railw ay passage. The basic direction of this railw ay passage is introduced,as well as its general situation- It is pointed out that the construction of the Xi an-Xiamen railw ay passage will complete the overall arrangement of railw ay networks in China. This railw ay passage is not only a political and national defence line,but also is a line to help the slum district in the mountain area. The construction of Xi-Xia Railw ay will become an economic developing link between inland and Southeast coastal areas,promote development of industry and agriculture along the railway, come off poor to become rich in mountain areas, provide conditions to develop industry of large and middle cities along the railway,and promote the development of tourism along this railway. The author suggests that the Xi-Xia railw ay passage may be constructed in following three steps,i. e. Ankang-Yichang at first, Pingxiang-Yong 'an secondly,and finally Shimen-Xiangtang. The construction of Xi-Xia Railway makes the structure of railway networks reasonable. The Lanxin-Lo nghai-Xixia railw ay line will become the main artery of communication between the East China and West China for economic development,promote peace and unifying the country with Taiwan Province, and create vigorous influence on economy and trade exchange between the two coast.