A method and apparatus for providing contents-sharing services are provided. The method for providing contents-sharing services includes: receiving a contents-sharing request message for a contents sharer from a first contents reproducing apparatus of a contents sharing requester; transmitting a contents-sharing notify message generated using the received contents-sharing request message to a second contents reproducing apparatus of the contents sharer; and transmitting the received contents-sharing request message to a streaming server, wherein the transmitted contents-sharing request message requests the streaming server to transmit contents to the second contents reproducing apparatus of the contents sharer.