Embodiments of the present disclosure disclose a discontinuous reception (DRX) implementation method, a DRX configuration method, and a related device. The DRX implementation method includes: receiving, by a terminal, DRX configuration information sent by a base station, where the terminal supports short transmission time interval (TTI) subframe transmission; and performing DRX according to the DRX configuration information, a system frame number (SFN), and a number of a short TTI subframe, where the short TTI subframe is a subframe numbered according to a short TTI, and a length of the short TTI subframe is less than 1 ms. In the embodiments of the present disclosure, DRX can be implemented at a short TTI, so as to improve overall performance of a system.