裂项相消求和是数列中一类重要的题型,裂项形式多姿多样,学生往往难以把握.文章对通项结构进行差异分析,统一解决一类裂项求和问题. The summation of disruptions is an important type of questions in the series, and the forms of clefts are diverse and students are often difficult to grasp.The article analyzes the differences of the general structure and solves the first type of disagreements uniformly.