To easily watch nail-care information through the terminal on the side of a nail-care user.

A nail-care information-providing system is provided with a nail-care information-providing server 1 which receives accesses via Internet from the terminal devices 2 of nail-care suppliers and the terminal devices 3 equipped with a reading device 31 of nail-care users. In this case, the nail-care information-providing server 1 is provided with a nail-care database 12 that stores at least the names of nail-care suppliers and the nail-care information which the nail-care suppliers offer. The terminal devices 2 of the nail-care suppliers can get access to the nail-care information-providing server, register the nail-care information and change the contents of the nail-care information. The terminal devices 3 of the nail-care users can read out the data from data- storing part materials which are installed in nails and get access to the nail-care information-providing server 1 to obtain the nail-care information or communicate with the nail-care suppliers. The nail-care information-providing system mentioned above, the nail-care information-providing server and false nails therefor.