An overlapped handwriting input method, which includes: moving a touch unit on a touch screen, recording and displaying the track of a stroke on a handwriting area of the screen; determining whether the stroke currently being written and all previously input strokes having a color A belong to the same character; if yes, keeping the current stroke color unchanged; otherwise, determining whether an inactive visual layer character is present on the screen; if yes, clearing an image of the inactive character and related stroke information; otherwise, defining as the inactive character all strokes having the color A, excluding the current stroke; submitting data of the current inactive character to a recognition engine, and outputting a recognition result. Thus, the interface friendliness for users to continuously input handwriting according to their natural writing practice is ensured, and multiple handwritten characters can be written continuously without pause, thereby improving handwriting input efficiency.