Abstract: Free flow of economic factors directly affects the urban and rural areas and urbanrural integration process.The main obstacles to economic flows between urban and rural areas in China include that urban to rural monopoly excess profits attract rural basic factor excessive migration to urban areas，the rural economy industrial low efficiency restricts the city modernization industry essential factor to flow in the countryside or the agriculture，the prejudice inhabitant rights and interests system has hindered free flow of economic factors between the urban and rural areas and so on.Based on the obstacles，it put forward the relevant policy suggestions.