Angina pectoris is mainly caused by acute and temporary ischemia and hypoxia of the myocardium due to insufficient blood supply to our coronary arteries, and its onset is characterized by episodes of squeezing pain in the precordial region, the location of which is mainly behind the sternum. Angina pectoris is usually accompanied by radiating pain, which can be radiated to the precordial region and the medial side of the left upper limb, and sometimes accompanied by atypical pain in the right arm. Angina pectoris may be induced after exertion, emotional stimulation, cold, or other sudden illnesses, and can be relieved by sublingual nitroglycerin during acute attacks. Symptoms of angina pectoris, to actively treat, improve their own coronary artery blood supply, carry medication, and actively follow the doctor’s advice, at the same time to note that the pain in the right arm is not necessarily caused by angina pectoris, it is recommended to actively seek the cause of the problem, and timely treatment. Other abnormalities should also be promptly consulted to avoid aggravation of the disease.