【英文摘要】Using the direct consuming coefficient, direct distribution coefficient, total input coefficient, etc, the quantitative analysis on the relationships between Chinese railway industry and other industries of national economy, the attributes of railway industry, the interacting consequences, the composition of value, etc. shows that railway feight transport is mainly used in the 2nd industrial departments, so the railway nets build should be strengthened; and its passenger transport mainly serves the 3rd industrial department, so its business should be increased. The main problem is that the building of railway transporting equipments are of strongly special purpose, short of external environment of competition, so it should be further perfected.