This paper analyses the background and pros & cons of local government existing obligations replacement in China, and believes that current replacement is significant in terms of alleviating local government debt, resisting and resolving financial risksHowever, the replacement still can be optimized in areas including offering pricing mechanism, overall reform effects, etcIn order to deal with the shortfalls of current replacement, this paper suggests learning from two replacements of national economic debt by issuing special national bonds in China since 1998, to realize the third replacement of national economic debt by issuing special bonds and securitization of foreign exchangeMeanwhile, this paper suggests promoting relevant systematic and institutional reforms as soon as possible, speeding up the governance of root causes for local government obligationThis paper believes that, at present, inflation in China remains mild, with overall sufficient foreign exchange, and RMB exchange rate enters into a twoway fluctuation channel, which have provided opportunities for the third replacement of national economic debt with the core of securitization of foreign exchange.