The present invention discloses an RR interval ECG data distribution display method. The RR interval ECG data distribution display method includes: extracting an RR interval from a dynamic electrocardiogram, and dividing the RR interval according to the preset time interval to obtain N sub-RR intervals; obtaining the ECG data of the RR interval, wherein the ECG data includes at least two heartbeat types and the number of heartbeats corresponding to each of the heartbeat types; traversing the ECG data of each of the sub-RR intervals, and performing the cumulative summation operation on the number of heartbeats corresponding to the same heartbeat type to obtain the number of heartbeats of each heartbeat type in the N sub-RR intervals; and displaying the number of heartbeats of each heartbeat type and the heartbeat types in the N sub-RR intervals in the form of a distribution diagram.