The embodiments of the present application provide an antenna port indication method, a terminal and a network-side device. Said method includes: transmitting a port indication message to a network-side device; and the port indication message carries at least any one of the following port indication information: bitmap information or combination coefficient information for indicating ports selected by a terminal; a first parameter for indicating the ports selected by the terminal; or a second parameter for indicating ports selected by the terminal in a first polarization direction and a third parameter for indicating the ports selected by the terminal in a second polarization direction. The embodiments of the present application achieve the indication of ports selected by a terminal.