The normal ECG axis ranges from -30° to +90°. If the ECG axis lies within the range of +90° to +180°, the ECG axis is right deviated; if the right deviation is less than 110°, it has little clinical significance. If the rightward deviation is greater than 110°, it is often indicative of organic heart disease. Mild rightward deviation of the electrocardiographic axis may be physiologic, such as in tall, thin, and young people, but it has no clinical significance, does not cause clinical symptoms, and has little effect on the human body. Rightward deviation of EKG may also be pathologic, which is common in organic heart disease such as right ventricular hypertrophy; it may also occur in left posterior branch block, right bundle branch block and other diseases; pulmonary embolism, pulmonary heart disease patients with right heart hypertrophy or dilatation, severe rightward deviation of the EKG may occur. After the appearance of rightward deviation of the ECG axis, it is necessary to further investigate the causes of the ECG changes. There are many reasons for the right deviation of the electrocardiogram (ECG) axis, so it is recommended to go to the hospital in time for active treatment to avoid delaying the condition.