A method for transmitting data is applied to a receiver and a plurality of transmitters. The steps comprise respectively transmitting a data to the receiver at different first transmission times within a transmission interval by the transmitters. Next, the different first transmission times are respectively added with different accumulated values to become the different second transmission times. The different accumulated values are respectively added with a multiple of the different first transmission times. Finally, the transmitters respectively transmit a next data to the receiver at the different second transmission times within a next transmission interval.