A new type aluminum alloy drill pipe was designed.The drill pipe could be suspended in the upper part of the borehole to align the high-speed zone with the cuttings bed,so the cuttings migration efficiency could be improved.The load analysis and strength check of the new aluminum alloy drill pipe were carried out to verify the new aluminum alloy drill pipe strength.By using Fluent,the three-dimensional model of cuttings transport in annular hole was analyzed qualitatively,and the cuttings transport efficiency of the new aluminum alloy drill pipe was compared with the traditional steel drill pipe under different drill pipe rotational speed,cuttings particle size,drilling fluid displacement and drilling fluid density.The results show that the new aluminum alloy drill pipe has better rock carrying capacity under different conditions,especially for large particle size cuttings transport.The research results are helpful for the application of new aluminum alloy drill pipe and the improvement of hole cleanliness.