To provide a method for partially sealing a book, and a sealing sheet by which the content of the book can be partially checked by a reader, and the feeder can allow the reader to partially read the content of the book.

A band body 10 is cut, and this sealing sheet 12b is formed. On one end section 14 of the sealing sheet 12b, an adhesive is applied. The book B is opened at an approximate one half of the thickness, and the sealing sheet 12b is inserted. The book B is closed, and an end section 16 on which the adhesive is not applied from among both end sections of the sealing sheet 12b is bent to the front surface side. Then, the end section 14 of the sealing sheet 12b is superposed on the end section 16 which has already been bent, and both end sections are bonded. Thus, one section of the text of the book B is prevented from being opened.