Arrhythmia manifests as palpitations (rapid heartbeat, often accompanied by panic), chest tightness, dizziness and other symptoms, which are categorized as “palpitations” in traditional Chinese medicine, and symptoms of palpitations may occur due to deficiency of qi and blood, but palpitations are not necessarily caused by deficiency of qi and blood. The beating of the heart requires the promotion and regulation of the heart qi and the nutritional support of the blood, when the body qi and blood is weak, the function of the heart will be affected, and there will be palpitations in the heart, alarming and restless, and even unable to control the symptoms. Qi and blood deficiency type palpitations can be treated with Gui Spleen Pill, including Codonopsis, Fried Atractylodes Macrocephalae, Roasted Astragalus, Roasted Licorice and other medicines, which can benefit qi, strengthen the spleen, nourish blood and calm the mind. It is used for deficiency of heart and spleen, shortness of qi and palpitation, insomnia and dreaminess, dizziness and lightheadedness, tiredness and weakness of limbs, and loss of appetite. Avoid indigestible food. Not suitable for patients with cold and fever. Cases of digestive discomfort and skin rash have been reported. Contraindications are not clear. However, deficiency of qi, blood, yin and yang, loss of moistening of the heart, or evil disturbance of the heart and mind are all causes of palpitations, so palpitations are not always caused by qi and blood deficiency. Patients with arrhythmia need to consult a professional doctor to identify the type of palpitation before treatment, and should not use medicine blindly.