A cell selection method performed inside a heterogeneous network, the method comprising: performing, by a terminal, cell measurement; obtaining, by the terminal, cell selection auxiliary information; and performing, by the terminal, cell selection or cell reselection according to a cell measurement result and the cell selection auxiliary information, characterized in that the performing, by the terminal, cell selection or cell reselection according to a cell measurement result and the cell selection auxiliary information comprises: determining, by the terminal, a candidate target set for the cell selection or reselection according to the cell measurement result, wherein the candidate target set comprises a candidate target cell or a candidate target base station; and selecting, by the terminal, a cell from the candidate target set according to the cell selection auxiliary information, and wherein the cell selection auxiliary information comprises one type or any combination of the following content: if the terminal has no cell-specific reference signal, CRS, interference suppression capability or interference cancellation capability, a carrier that is configured to be used to avoid interference to a neighboring cell is used as a high-priority cell selection or reselection target; and if the terminal has the CRS interference suppression capability or interference cancellation capability, the carrier that is configured to be used to avoid interference to a neighboring cell is used as a low-priority cell selection or reselection target, wherein the carrier used to avoid interference to a neighboring cell comprises an extension carrier or a new carrier type or a segmentation carrier or a carrier that is in a subsequent evolved system and that can avoid interference to another cell. performing, by a terminal, cell measurement; obtaining, by the terminal, cell selection auxiliary information; and performing, by the terminal, cell selection or cell reselection according to a cell measurement result and the cell selection auxiliary information, characterized in that the performing, by the terminal, cell selection or cell reselection according to a cell measurement result and the cell selection auxiliary information comprises: determining, by the terminal, a candidate target set for the cell selection or reselection according to the cell measurement result, wherein the candidate target set comprises a candidate target cell or a candidate target base station; and selecting, by the terminal, a cell from the candidate target set according to the cell selection auxiliary information, and determining, by the terminal, a candidate target set for the cell selection or reselection according to the cell measurement result, wherein the candidate target set comprises a candidate target cell or a candidate target base station; and selecting, by the terminal, a cell from the candidate target set according to the cell selection auxiliary information, and wherein the cell selection auxiliary information comprises one type or any combination of the following content: if the terminal has no cell-specific reference signal, CRS, interference suppression capability or interference cancellation capability, a carrier that is configured to be used to avoid interference to a neighboring cell is used as a high-priority cell selection or reselection target; and if the terminal has the CRS interference suppression capability or interference cancellation capability, the carrier that is configured to be used to avoid interference to a neighboring cell is used as a low-priority cell selection or reselection target, if the terminal has no cell-specific reference signal, CRS, interference suppression capability or interference cancellation capability, a carrier that is configured to be used to avoid interference to a neighboring cell is used as a high-priority cell selection or reselection target; and if the terminal has the CRS interference suppression capability or interference cancellation capability, the carrier that is configured to be used to avoid interference to a neighboring cell is used as a low-priority cell selection or reselection target, wherein the carrier used to avoid interference to a neighboring cell comprises an extension carrier or a new carrier type or a segmentation carrier or a carrier that is in a subsequent evolved system and that can avoid interference to another cell.