A digital broadcast transmission device for transmitting on two or more physical channels a bit stream having a digital broadcast program and information related to the digital broadcast program, the digital broadcast transmission device comprising: channel combination information generation means (14,18) for obtaining information of physical channels from transport stream information having information about all transport streams in an entirety of digital broadcast, and for generating channel combination information associating a plurality of physical channels with each other; a bit stream is a bit stream of a digital broadcast program having an amount of information that cannot be transmitted on a single physical channel alone; transmission means (15, 16, 17, 18) for dividing a bit stream into a plurality of divided bit streams (101a, 101b) and transmitting the divided bit streams (101a, 101b) with the channel combination information on the plurality of physical channels, respectively; light bit stream generation means (71, 72, 73, 74) for generating a light bit stream having a program that is the same as the digital broadcast program transmitted as the divided bit streams (101a, 101b) by the transmission means (15, 16, 17, 18) and being smaller in amount of information by lowering quality thereof so as to be transmittable only on a single physical channel; and simultaneous transmission means (76, 77) for transmitting the light bit stream on a single physical channel together with simultaneous broadcast information including information of the physical channels on which the divided bit streams are transmitted, simultaneously with the divided bit streams (101a, 101b) transmitted by the transmission means (15, 16, 17, 18), the single physical channel being different from the physical channels used by the transmission means (15, 16, 17, 18) to transmit the divided bit streams (101a, 101b). channel combination information generation means (14,18) for obtaining information of physical channels from transport stream information having information about all transport streams in an entirety of digital broadcast, and for generating channel combination information associating a plurality of physical channels with each other; a bit stream is a bit stream of a digital broadcast program having an amount of information that cannot be transmitted on a single physical channel alone; transmission means (15, 16, 17, 18) for dividing a bit stream into a plurality of divided bit streams (101a, 101b) and transmitting the divided bit streams (101a, 101b) with the channel combination information on the plurality of physical channels, respectively; light bit stream generation means (71, 72, 73, 74) for generating a light bit stream having a program that is the same as the digital broadcast program transmitted as the divided bit streams (101a, 101b) by the transmission means (15, 16, 17, 18) and being smaller in amount of information by lowering quality thereof so as to be transmittable only on a single physical channel; and simultaneous transmission means (76, 77) for transmitting the light bit stream on a single physical channel together with simultaneous broadcast information including information of the physical channels on which the divided bit streams are transmitted, simultaneously with the divided bit streams (101a, 101b) transmitted by the transmission means (15, 16, 17, 18), the single physical channel being different from the physical channels used by the transmission means (15, 16, 17, 18) to transmit the divided bit streams (101a, 101b).