The woody image consists of various elements such as the grain pattern, the color tone, the gloss, the structure of wood. Among them, only the stripe patterns of the grain were investigated and discussed. The object of the present study is to examine what kind of patterns make us feel woody, and to make clear visual characteristics of the grain patterns. Thirty-nine grain patterns generated from the computer after the svstem are evaluated by questionaire with eighteen adjective rating scales. The conclusion is the following ; (1) The grain patterns appearing to be woody rimind us a good image-affective, natural, familiar, at ease etc. (2) The grain patterns have moderate fluctuation of stripes. The coefficient of variation is considered to be good for the index of the fluctuation.