Provided are a cell selection method and a related device. The method comprises: a terminal determining the weight of each first candidate cell according to a first parameter of each first candidate cell among a plurality of first candidate cells; the terminal determining the priority of each first candidate cell according to a second parameter of each first candidate cell and the weight of each first candidate cell; and the terminal determining a target cell according to the priority of each first candidate cell, and thereby ensuring the reliability of cell selection by the terminal, and preventing a ping-pong effect.