Cuttings bed is easily formed in annulus of highly deviated well section during drilling extended reach horizontal well, making drill string weight held, friction and torque increase. In this case, pressure blockage easily occurs to mud pump and pipe-sticking happens in a serious situation. To solve the above problems, a new type of cuttings bed remover is put forward based on design and research in this paper and a position design formula for cuttings bed remover in drill string assembly is proposed. The sound application of new cuttings bed remover in an extended reach horizontal well of certain oilfield in the east of South China Sea shows that the amount of return cuttings is improved greatly, the depth of drill string weight held appearing for the first time got deeper, the frequency of drill string weight held reduces. Besides, the degree of drill string weight held is obviously improved. The difference value of weight on bit on the point of drill string weight held and Equivalent Circulatin Density(ECD) in bottom hole both reduce obviously. The research can provide reference for the field construction of extended reach horizontal well or high deviation well.