This study attempt to suggest a policy for the effect of using in the public libraries by the verification that are different between groups by their using patterns and types of book collections. by using patterns and system of desired-book for user. by using patterns and system of desired-book for user. The questionnaire is distributed to the delivery lending library's user and librarian in public libraries. The summary of results are as follows 1 The Circulation period of public library is one month per every delivery lending library. 2. The Circulation volume of public library is '100-200' books per every times. 3. There are significant differences by their using patterns and types of book collections. 4. There are significant differences by their using patterns and system of desired-book for user. 5. There are significant differences by their using patterns and placement of book collections. Their results show that library is most effective place of book collection services. 6. Circulation services must carry out only in the sphere of jurisdiction 7. A Lost books must set up treatment basis of natural reduction ratio 8. The Interference factors of delivery lending library are lacks of human power, lost books and negative attitute of user in order 9. The Effects of using a delivery lending library are a positive attitute and specialty of top management, the optimum of budget and the effect of deposit system 10. Natural reduction ratio of lost books appropriates 0.5-0.6% of total loaned books