The bulging of the right side of the navel compared to the left side may be caused by lipoma, sebaceous cyst, intestinal obstruction and other reasons. 1. Lipoma: If there is a lipoma or fibroma on the right side of the navel, when the volume is large, it can cause the abdominal wall to bulge, which is manifested as a bulge on the right side of the navel compared to the left side of the navel. 2. Sebaceous cysts: If there are sebaceous cysts on the right side of the navel, when the volume is larger, the right side can be bulging compared to the left side. 3. Intestinal obstruction: If there is an intestinal obstruction in the right side of the navel, the obstruction of the intestinal tract, the accumulation of fluid and gas in the intestinal tube, the volume increases, the right side of the manifestation than the left bulge. The right side of the navel than the left bulge, there may be other causes, should go to the hospital in a timely manner to improve the examination, a clear diagnosis, under the guidance of the doctor for standardized treatment, so as to avoid delays in the condition of the body to bring about adverse effects.