The index of urban-rural capital stock is absolutely necessarily but still being short of in the empirical research of economic growth and productivity. This paper compares the existing studies on the estimation of capital stock in China, takes care of such statistical issues as investment flow, capital deflator and errors and omission of data, and estimates the urban-rural capital stock in China between 1952 and 2007 using perpetual inventory method. The completion of urban-rural capital stock in China is expected to upgrade the research on the growth theory of urban-rural economy.