【Objective】 Strip cutting of moso bamboo forests can realize their mechanized management. We aimed to provide a scientific basis for the reasonable management of bamboo strip cutting, biomass allocation and allometric growth of Phyllostachys edulis with different cutting widths. 【Method】 Whole forest clear-cutting of P. edulis forests of different widths was conducted in December 2019. The number of new bamboos, diameter at breast height (DBH), clear bole height and height of the bamboo at different cutting widths (0, 3, 9 and 15 m) were counted in August 2020. The biomass of branches, leaves and stems of new bamboo were investigated, and the biomass allocation characteristics and allometric growth relationship of aboveground components were analyzed. 【Result】 Strip cutting increased the number of new bamboos: the trend was first increase and then decrease, and the number reached the maximum value in the 9 m cutting width. With the increase in cutting width, the bamboo height (CBH), DBH, clear bole height, and ratio of CBH to DBH of new bamboo decreased, and the fresh branch, leaf, stem weight and total biomass decreased significantly. Strip cutting could improve the leaf strength and ratio of bamboo height to DBH of P. edulis, especially the proportion of leaf distribution and leaf relative biomass. Strip cutting did not change the isokinetic growth relationship between the stem-total biomass of P. edulis but significantly affected the relative growth rate of branch-total biomass and leaf-total biomass, which changed from allometric growth to isokinetic growth.【Conclusion】 The results showed that strip cutting balanced resource allocation among the components through physiological integration, the allometric growth relationship was changed, and the morphological plasticity of new bamboo was induced.