Abstract: Multiphase transportation technique in petroleum industry has the advantage of simplifying process flow and lowering investment, and is the most challenging and potential in oil and gas gathering and long distance pipeline transportation field. This paper gives summarization on the representative frontier research work of multiphase mixing transportation techniques in the developed countries, and introduces the advance in the CNPC's major research project in rnultiphase flow transportation carried out by Daqing oilfield, forecasts the development prospects in multiphase flow research field on the basis of current technical status quo and market demand.