Abstract：Research purposes: The paper intends to supply reference to the solutions to the structural equity capital in the course of the harmonious development of railway by positively studying on project financing of Public-Private-Partnership(PPP).
Research methods: By positively analyzing PPP project financing by abstracting and summing up，and taking a analogy about PPP project financing succeeded in domestic giant infrastructure fields(including railway projects)，the paper researches an application on PPP project financing in the harmonious development of railway.
Research results: On the basis of resolving two cruxes，the paradigm of PPP financing will theoretically finance 600-800 billion RMB equity capital for the harmonious development of the railway.
Research conclusions: PPP project financing can efficiently resolve the equity capital problem of being unbalanced. There are necessity and condition to practise and spread it.
2007, Vol. 24 
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