Abstract: An electronic device and document editing method are provided. Programs in a storage device, executed by at least one processor, cause the at least one processor to display an interface showing a first electronic document including an insertion area having a first size; determine whether a touch operation applied on the interface showing the first electronic document is an editing operation; adjust size of the insertion area based on the touch operation if the touch operation is the editing operation to a second size that is different from the first size; and locate a selected object on the adjusted insertion area if the selected object is moved toward and overlapping the adjusted insertion area, the selected object being a copy of an object displayed on an interface showing a second electronic document.