To provide a rental system of digital contents enabling a user to easily rent a recording medium, and a rental agent to easily collect the rental fee without managing rental information of the user.

The rental system of digital contents comprises a content delivery center 110 having a content DB 112 preliminarily recording a content file in a state where reproduction information 1a of header information a thereof is absent, and delivering the content file; a delivery management center 120 having a piece data DB 122 preliminarily recording the reproduction information a1, and delivering the reproduction information 1a; the recording device 130 that is a terminal communicable with the content delivery center 10 and recording agent information in a memory part 135, the recording device being used to record the content file delivered from the content delivery center 110 to a storage medium α; and the reproduction device 140 communicable with the delivery management means 120, the reproduction device being used to reproduce the content file on the recording medium α.