A method for preventing disconnection of an audio/video stream in a home network includes: a step in which a renderer connected to a server requests A/V streams; a step in which the server judges whether A/V streams can be outputted in response to the request from the renderer; and a step in which the server provides the A/V streams to the renderer sequentially or simultaneously if the A/V stream can be outputted, or outputting a server unavailableness message to the renderer if the server judges that the A/V streams can not be outputted. Without a memory, even though plural renderers are simultaneously or sequentially connected to the server, an abnormal image is prevented from being outputted, so that a service user can be provided with an image without disconnection.