Stent displacement is mostly seen in cardiac stent displacement, and the symptoms include chest pain, shortness of breath, weakness of limbs and pallor. 1. Chest pain: If the heart stent is dislocated, it is likely to lead to some damage to the local vascular mucosa, which will cause platelet aggregation, and in serious cases, thrombus will also be formed, which will bring stimulation to the heart area and cause chest pain. 2. Shortness of breath: the presence of cardiac stent displacement may affect the circulation of blood vessels, resulting in damage to the heart and symptoms of shortness of breath. 3. Weakness of limbs and pallor: the presence of a displaced cardiac stent may affect the blood supply as well as oxygen supply to the whole body, making it easy for symptoms such as weakness of limbs and pallor to occur. Cardiac stents are mainly located in the heart, used to improve the narrowing of the heart tubular arteries and promote cardiovascular return. So heart stent displacement is a very serious situation, when the patient produces the above symptoms, should go to the regular hospital as soon as possible for diagnosis and treatment.