A method for processing ECG signals includes: removing peak position information of any R wave of a plurality of R waves in a plurality of ECG signals if it is determined that a first RR interval is less than or equal to a first RR interval threshold, and an amplitude of the R wave is less than or equal to a first R wave amplitude threshold; and detecting at least one new R wave in a first RR interval if it is determined that the first RR interval is greater than or equal to a second RR interval threshold; obtaining peak position information of the at least one new R wave, and then storing peak position information of any new R wave if it is determined that an amplitude of the new R wave is greater than or equal to a second R wave amplitude threshold.