The invention relates to the technical field of transplanting and cultivation of garden plants, and in particular relates to a method for transplanting large trees and ancient and famous trees with the ground diameter of more than 20cm in a wetland area. The method comprises the following steps of: a. propping; b. excavating; c. root surrounding with a material; d. backfilling; e. management; f. excavating and lifting; and g. handling. The survival rate of tree transplanting is greatly improved by the method, and the experimental survival rate reaches 95% or more. The key problem that the large tree transplanting survival rate is low in the wetland area is solved to achieve the efficient and simple purposes.