Sinus tachycardia does not necessarily mean heart disease, it depends on the cause and cannot be generalized. Sinus tachycardia refers to an increase in heart rate. The normal heart rate is 60-100 beats per minute, but in sinus tachycardia, the heart rate is 101-160 beats per minute, which is a common arrhythmia problem. Sinus tachycardia can easily occur when emotionally overexcited, nervous or staying up late for a long time, drinking strong tea for a long time, or drinking a lot of alcohol, etc. It can generally be relieved after removing the triggers, and at this time there is no organic lesion of the heart, and it cannot be considered as a heart disease. If, in addition to tachycardia, there are also symptoms such as chest tightness, precordial pain, shortness of breath and dizziness, it may be caused by heart failure, myocarditis or anemia, hyperthyroidism, etc., and needs to be treated by cardiology or endocrinology. In daily life, you should pay attention to reasonable work and rest, eat nutritious food, quit smoking and limit alcohol, and maintain good living habits. If the sinus tachycardia is caused by disease factors, you need to follow the medical advice for treatment.