Broadcast signal receiving apparatus and broadcast signal receiving method

Provided are a broadcast signal receiving apparatus and a broadcast signal receiving method, capable of providing CMs to make the CMs have greater similarity to viewing program content. The broadcast signal receiving apparatus of the present embodiment comprises: a receiving element used for receiving and demodulating broadcast content; a CM substitute time period information acquisition element used for acquiring a specific assigned time period for a CM substitute among one or more CM during the playing of the broadcast content; a CM substitute acquisition element used for acquiring at least one CM substitute associated with the broadcast content from external device; and a CM selection element used for playing the CM substitute during a specific assigned time period for the CM substitute on the basis of the time period information for the CM substitute.