The emphases of constructing modern market system depend on：1）clear property rights，its requiring to break the monopoly，to deepen the reform of state owned enterprises，to implement the negative list；2）market price signal mechanism construction，its requiring to improve the price mechanism of agricultural products，resource products，public products；3）free flow of market factors，its requiring to promote two-way flow of urban and rural elements，create win-win market integration. The difficulty lies in reasonable moderation of government role，its requiring to construct the symbiotic relationship between government and market，build credit system，perfect supervision mechanism.