Moderate right deviation of the electrical axis means that the electrical axis of the heart is in the range of 120-180 degrees, which can be seen in conditions such as a normal, tall, thin body and right heart failure. An electrical axis of -30 to +90 degrees is considered normal, and more than +90 degrees is considered right deviation. A moderate right deviation of the ECG suggests that the electrical axis is in the range of +120 to +180 degrees. Moderate right deviation of EKG can be seen in normal people, such as those who are tall and thin, and the position of the EKG axis is related to the position of the heart, which does not require special treatment if there are no uncomfortable symptoms. Moderate right deviation of EKG can also be seen in organic heart disease, for example, right heart insufficiency can lead to the enlargement of the right heart, and the position of the heart in the chest cavity will change, which can be manifested as moderate right deviation of EKG. It is important to look for the cause of moderate right deviation of ECG, to clarify the specific diagnosis, and to give treatment under the guidance of physicians.