A method of monitoring a Physical Downlink Control Channel, PDCCH, wherein the method is performed by a terminal and comprises: monitoring a PDCCH according to PDCCH blind detection capability information of N scheduling cells; wherein, the N scheduling cells are cells from M cells configured for the terminal by a network device, the M cells further comprise X scheduled cells; the PDCCH blind detection capability information of the N scheduling cells is related to a cell parameter of the M cells; the PDCCH blind detection capability information of the N scheduling cells is used to indicate maximum processing capability of the terminal in performing PDCCH blind detection in each scheduling cell or the N scheduling cells per unit time; the cell parameter comprises at least one of: the number of cells capable of being scheduled by each scheduling cell, a subcarrier spacing of each cell, a cell identity of each cell, and the number M of cells configured for the terminal; M and N are positive integers greater than or equal to 1, X is a positive integer greater than or equal to 0, M=N+X, before monitoring the PDCCH according to the PDCCH blind detection capability information of the N scheduling cells, the method further comprises: acquiring first candidate PDCCH blind detection capability information and second candidate PDCCH blind detection capability information of a first scheduling cell; and determining a minimum between the first candidate PDCCH blind detection capability information and the second candidate PDCCH blind detection capability information as PDCCH blind detection capability information of the first scheduling cell, in a case that subcarrier spacings of the M cells are same. monitoring a PDCCH according to PDCCH blind detection capability information of N scheduling cells; wherein, the N scheduling cells are cells from M cells configured for the terminal by a network device, the M cells further comprise X scheduled cells; the PDCCH blind detection capability information of the N scheduling cells is related to a cell parameter of the M cells; the PDCCH blind detection capability information of the N scheduling cells is used to indicate maximum processing capability of the terminal in performing PDCCH blind detection in each scheduling cell or the N scheduling cells per unit time; the cell parameter comprises at least one of: the number of cells capable of being scheduled by each scheduling cell, a subcarrier spacing of each cell, a cell identity of each cell, and the number M of cells configured for the terminal; M and N are positive integers greater than or equal to 1, X is a positive integer greater than or equal to 0, M=N+X, before monitoring the PDCCH according to the PDCCH blind detection capability information of the N scheduling cells, the method further comprises: acquiring first candidate PDCCH blind detection capability information and second candidate PDCCH blind detection capability information of a first scheduling cell; and determining a minimum between the first candidate PDCCH blind detection capability information and the second candidate PDCCH blind detection capability information as PDCCH blind detection capability information of the first scheduling cell, in a case that subcarrier spacings of the M cells are same. <EOS>