The normal heart rate for an 80 year old is 60 to 100 beats per minute in a quiet state. Heart rate refers to the number of times a normal person’s heart beats per minute in a quiet state.The normal heart rate for an 80-year-old is also 60 to 100 beats per minute. Physiological causes such as age, gender, exercise, diet, alcohol consumption, etc. may cause the heart rate to increase, and pathological causes such as heart disease and thyroid disease may also affect the heart rate. If the heart rate of an 80-year-old person is more than 100 beats per minute or less than 60 beats per minute, he or she needs to go for further examination of thyroid function, electrocardiogram, cardiac ultrasound and other programs to find out the cause, and then under the guidance of the doctor, treatment will be carried out.