The present disclosure relates to a method, device and system for amending a heartbeat type. The method includes: displaying an interface for presenting heartbeat waveforms； based on a user interface provided on the interface for presenting the heartbeat waveforms, detecting a currently triggered heartbeat type； and when detecting that at least one electrocardiogram waveform on the interface for presenting the heartbeat waveforms is selected, amending a heartbeat type of the selected at least one electrocardiogram waveform as the currently triggered heartbeat type. The technical solutions provided by the present disclosure can simplify operations for amending heartbeat types and thereby improve working efficiency.
