The t-wave, such as the appearance of high sharp, low flat, inverted and other phenomena indicate that there are abnormalities, there can be palpitations (rapid heartbeat, often accompanied by panic), chest tightness, numbness of the limbs and other manifestations, should be based on the specific cause of the disease to determine. 1. Non-specific changes: if the examiner has emotional instability, stress, no rest, etc. in the recent past, it can also be manifested as t-wave abnormalities, usually without obvious clinical symptoms. 2. t-wave hyperacute: mostly seen in hyperkalemia, often combined with bradycardia, need to further investigate electrolytes, clinical symptoms can generally be manifested as chest tightness, dizziness, black haze, numbness of limbs and other symptoms. 3. t-wave flattening: mostly seen in myocardial ischemia, the common symptoms are panic, palpitation (rapid heartbeat, often accompanied by panic), chest tightness, chest pain, and some of them may also have obvious discomfort and pain in the precordial area. The appearance of t-wave abnormalities, it is recommended to seek medical attention in a timely manner to further identify the cause of the disease, under the guidance of a physician to avoid delays in the condition.