The purpose of this study is to measure economic value of full-text information services in order to determine whether it is worth for libraries to invest a large amount of money in constructing database to begin with. The study applied an contingent valuation method to measure its economic value. The imaginary scenarios are designed for estimation the value of Non-market-goods, estimation in advance and experts investigation are needed for rising the confidence level, double-bounded dichotomous choice is chosen in question method. The use value, which one user is willing to pay for domestic monograph full-text information services, was 836 won per one monograph. And, the annual non-use value was 236 won. The total annual economic value of all the students was 831 billion won.