[Objective] The effects of natural alike management on carbon storage in Pinus tabulaeformis plantations under different forest ages were studied in order to provide theoretical support for establishing reasonable forest management mode in Pinus tabulaeformis plantation.[Methods] This article took the young, middle-aged and near-mature Pinus tabulaeformis planted forest under natural alike management as example, and compared it with the forests under conventional management and no treatment, studied the carbon storage of the artificial Pinus tabulaeformis forest at Wangyedian forest farm of Chifeng City, Inner Mongolia.[Results] ①The carbon storages of vegetation, trees and litters were ranked as follow:values of the no treatment > the ones of natural alike management > the ones of conventional management. Although the carbon storage of natural alike forest management was lower than those of no treatment, but was higher than those of conventional management. It was benefit for the increase of carbon storage. ②Carbon storage of herbs had the following rank:values of natural alike management > the ones of conventional management > the ones of no treatment. The natural alike management effectively improve the forest structure, and helped herbaceous grow well and hence carbon storage increased. ③Because there were few species and densities of shrubs were low, on obvious regularity with respect to the carbon storage of shrub layer of these forests was found.[Conclusion] On the whole, if we consider the increase of forest carbon storage, it is conducive for the no treatment in term of the accumulation of forest carbon storage; the conventional management is more conducive for improving the quality of forest timber; if both aspects are considered, the natural alike management is the most appropriate one.