The invention provides a character input device and method. By the aid of the device and the method, accurate characters that users want to be input can be input easily even if complex operations are not performed during mistaken recognition of hand input. The device comprises a combination determining portion, a combination character forming determining portion, a combination character forming portion and a display control portion. The combination determining portion determines whether input determined characters are required to be combined. The combination character forming determining portion combines a plurality of the input determined adjacent characters under the circumstance that the combination determining portion determines that combination is needed, or combines input determined characters and alternate characters and determines whether the characters can be formed into single combined characters. The combination character forming portion forms the combined characters under the circumstance that the combination character forming determining portion determines that the combination characters can be formed. The display control portion displays the combined characters formed by the combination character forming portion or character arrays after the combined characters are replaced by the combination characters on a display portion.