System for downloading contents via network

A system for downloading contents fit to environment of a client device from a contents service server through the network is provided to enable a user to download the proper contents by making the contents service server automatically select/transmit the contents fit to hardware/network environment of the client device. A contents database(13) stores the contents of the first to the 'N'th type prepared by considering the different environment of each client device, and attribute information of each contents type. A controller(11) receives a contents download request and the environment information from the client device, selects one fit to the environment information of the client device among various types of contents by using the attribute information of each contents type, and transmits the contents of the selected contents type to the client device.