This thesis suggests that a direct adaptable methods of the way of adapting thesauruses on reading for constructing the reading materials and attaining the reading educate result in the Korean education. If there is provided certain indexes which are objectively processed and branched i.e. thesauruses and it could be concerned not also a text interpretation but also text production, certainly it will be an indicator to measuring text readabilities or difficulties. Lexicon centered reading education means that making the methods of lexicon teaching through reading activities. Therefore these goals are raising intelligibility of lexicon and at the same time promoting the ability of explaining and fluency and accuracy. And the way of accomplishing these goals, if we will adapt the Synaptic Thesaurus system on reading, it will bring about below result. 1) Using the Synaptic Thesaurus system make the text 'lectio quotient' measurement of the published books and text writing which is considered 'lectio quotient' possible. 2) Using theme centered the Synaptic Thesaurus system can discriminate the quantity of the theme centered lexicon and the grade of them and also measure the meta-language