In reading education should be pursue to mold the subject of reader. In order that student may take it, the reading instruction should make the reading desirer in his unconsciousness. The reading desire is made from suppression of feeling of satisfaction about constructed idea in reading. The suppression of it is made by the idea of the Other. To construct the subject of reader in student's mind by reading teaching, the teacher's assistance accords with the student's desire. The teacher should make a lack of feeling of satisfaction in his mind by opposed to his idea. In assistance strength, the teacher come into close relation with student, antagonistic relationships and appreciation his idea. In assistance consistency, the teacher presents difference of opinion, accepting student's idea, helping construction of idea. The student, in strength of desire formation, make deficiency of satisfaction feeling on idea, replenish deficiency, and increasing deficiency. In consistency of desire formation, student has to perceiving idea of other, constructing and expanding his idea. in this way, reading instruction helps student to take the subject of reader by using the teacher's assistance and desire. For the education of the reader's subject formation, the teacher should understand the principles of that. Then teacher may help student to have the reader's subject by means of effective teaching method.