Palpitations belong to the symptoms of the patient and are mostly seen in tachycardia. Premature beats are a type of preterm contraction, which belongs to the name of the disease, and premature beats can also lead to symptoms of palpitations. Palpitations are a subjective symptom of the patient, and most patients with tachycardia can exhibit symptoms of palpitations, such as sinus tachycardia, supraventricular tachycardia, etc. Frequent premature beats can also lead to symptoms of palpitations. Premature beats are a medical term, clinically known as preterm contractions, which are contractions of the heart that occur prematurely due to additional stimulation of the heart, and are clinically categorized as atrial and ventricular premature beats, which can also affect the functioning of the heart and lead to symptoms of palpitations. Patients with palpitations should pay attention to the electrocardiogram to clarify the main cause of palpitations, some patients may be caused by premature beats.