Heart blood deficiency and heart yin deficiency can cause palpitations and insomnia. Blood deficiency of the heart refers to the clinical manifestation of insufficient blood in the heart, which is not nourished. The cause of the disease is excessive blood loss, or consumed by prolonged illness. The manifestations are palpitations, insomnia and forgetfulness, dizziness, pale face, pale lips, and weak pulse. Insufficient blood in the heart, blood does not nourish the heart, so palpitations, insomnia; blood deficiency can not be up to the head and eyes, so there will be dizziness. In addition to palpitation and insomnia, heart yin deficiency is usually characterized by symptoms of deficiency heat, such as heat in the hands and feet, hot flashes, sweating, dry throat and heartburn. The disease is mostly due to long illnesses, heat illnesses that deplete yin fluid, or too much thinking that depletes heart yin. Heart yin is insufficient and yin does not control yang, so deficiency heat arises internally, so there are hot flashes, heat in the hands, feet and heart. If the patient has any discomfort, please consult a doctor in time to identify the cause of the disease and standardize the treatment.