In a hexagonal element extraction method, a hexagonal theme region (0) for writing or inputting a subject or the theme to be given a thought is set, and hexagonal first-layer element regions (1-6) for writing or inputting elements such as subjects, action means, and the like that come into one's mind in association with the theme written in the theme region (0) are set around the theme region (0) to form a first layer. Furthermore, elements that come into one's mind in associated with those written in the first-layer element regions (1-6) are defined as new subtheme, and hexagonal subtheme regions (3-0, 5-0) for writing or inputting these subthemes are set. Hexagonal second-layer element regions (3-1, 3-2, . . . , 3-6, 5-1, 5-2, . . . , 5-6) for writing or inputting elements such as subjects, action means, and the like that come into one's mind in association with the subthemes written in the subtheme regions (3-0, 5-0) are set around the subtheme regions to form a second layer. The number of layers is increased in such procedure to hierarchically break down the elements that occur such as subjects, action means, and the like, thereby easily transforming abstract elements into concrete elements.