The invention discloses a channel linkage treatment method based on quantitative indexes. The channel linkage treatment method comprises the following steps that firstly, a specific value lambda of the water flow shaking force index to the river way constraining force index serves as the river segment upstream and downstream linkage treatment evaluation index, and the evaluation benchmark index numerical value is set as lambda e; secondly, the actual specific value lambda s of the water flow shaking force index to the river way constraining force index of an actual channel is obtained; and thirdly, lambda s is compared with lambda e, and the following substeps are carried out according to the comparison results, in the step c-1, when lambda s is larger than or equal to lambda e, the upstream and downstream river segments serve as a whole, and linkage renovation is carried out from top to bottom; and in the step c-2, when lambda s is smaller than lambda e, a single beach treatment measure is adopted. Through experiments, the channel linkage treatment method based on the quantitative indexes can adapt to long river segment renovation and meet the renovation requirements of different channel measure targets.