Data transmission/ receiving method in multimedia broadcast multicast service system and apparatus thereof

A method for transmitting/receiving data capable of improving effectiveness of retransmission in multimedia broadcast multicast service system and apparatus thereof are provided to effectively use a wireless resource by preventing a retransmission of an unnecessary data. A method for transmitting/receiving data capable of improving effectiveness of retransmission in multimedia broadcast multicast service system comprises the following steps: a step for confirming a terminal which receives a data provided with a multimedia broadcast multicast service(S102); and a step for determining an existence and a nonexistence of an error report feedback about the retransmission of the data according to the number of confirmed terminals(S104).