A heartbeat of about 100 beats is located in the normal range, if there are no symptoms, you can temporarily do not need to seek medical attention; if there are symptoms such as dizziness, chest tightness, palpitations, etc., it is recommended to seek medical attention. The normal value range of heartbeat is 60 to 100 beats per minute, and a heart rate of 100 beats per minute belongs to the situation located in the critical value. Usually in the emotional tension or excitement, intense exercise, physical labor and other physiological state, the heart rate can appear up to 100 beats / minute, after resting for a period of time, the heart rate will gradually return to the normal range, this do not use to seek medical attention. If the heart rate is found to be 100 beats / minute accompanied by dizziness, headache, chest tightness, palpitations, shortness of breath and other symptoms, and the heart rate for a long time did not return to the normal range, may be coronary heart disease, arrhythmia, rheumatic heart disease, viral myocarditis, anemia, hyperthyroidism, and other diseases caused by the heart rate can not rely on the diagnosis of the specific cause, it is recommended that timely access to medical care to identify the cause of the disease.