Abstract: Provided are a method and apparatus for transmitting/receiving data by using a multi-path. The multi-path is established between two transceivers, data is transmitted via each path at a predetermined time, a data receipt acknowledge control signal ACK of each path is received, and a path by which the data receipt acknowledge control signal ACK is not received is determined. Therefore, the path by which the data receipt acknowledge control signal ACK is not received is not used any further but data is transmitted via a path by which the data is previously transmitted, so that the data can be transmitted even if a line of sight (LOS) of the two transceivers comprising a directional antenna is blocked by a person or an obstacle.