Usually, the pulse beats a few times and stops heart discomfort is usually referred to as cardiac preterm contraction. It may be caused by physiological and pathological reasons, including over-exercise, heart disease, hyperthyroidism and so on. Symptoms can be relieved by improving life, medication, surgery, etc., including rest, taking aspirin and other medications, radiofrequency ablation, and so on. 1. Physiological causes: such as exercise, over-excitement, etc., which can cause different degrees of preterm contraction, are physiological phenomena. Patients with this condition and no organic cardiac lesions generally do not need medication, usually pay attention to rest, to regulate emotions, improve lifestyle, can be recovered. 2. Pathologic causes: (1) heart disease: such as cardiac conduction system lesions, cardiac failure, etc., due to organic lesions of the heart, which may affect the operation of the heart beat contraction, resulting in cardiac preterm contraction. Medications such as aspirin and metoprolol may be prescribed to treat the symptoms. Radiofrequency ablation can be used to relieve frequent precession or patients with left heart dysfunction. (2) Hyperthyroidism: When hyperthyroidism occurs, thyroxine can play a direct or indirect role on the heart, causing organic cardiac pathology, resulting in cardiac preterm contraction. Commonly used drugs include methimazole and propylthiouracil. For elderly patients, 131 iodine therapy is an option when antithyroid medication is unsatisfactory. In addition, it is recommended that if cardiac precession is uncomfortable, you should go to the hospital in time and follow the doctor’s instructions for surgical treatment.