MACHINE TRANSLATION DEVICE

PROBLEM TO BE SOLVED: To enable an operator without having any knowledge of an original language and an object language to use and to reduce the resources necessary for development. SOLUTION: The machine translation device 3 sets up translation features of both languages which select automatically one from a plurality of possible translations to a certain original language sentence or an original language translated for an object language on both sides of a language translation processing part 12 where one side is an original language translation processing part 11 and the other side is an object language translation processing part 13. The original language translation processing part 11 generates difference information indicating the difference before and after the processing of translation operation for the selected original language. Based on the difference information, the object language translation processing part 13 refers to the translation operation of the object language making a pair with the component element before and after the translation in the translation operation of the object language, and calculates a score indicating the level of closeness of configuration elements before the translation in the translation operation of the object language performing translation operation opposite to the above difference information against the configuration element of the above object language sentences, and select the translation operation of the object language including the configuration elements before the translation in the translation operation of the object language having the maximum score.