A bad heart does not usually cause swelling and pain on the left side of the belly button, it usually leads to pain in the anterior chest area, and the cause of swelling and pain on the left side of the belly button may be related to gastrointestinal inflammation, obstruction, and other diseases. Most of the heart is located behind the sternum, and if the heart has organic lesions or malfunctions, the pain will usually occur near the sternum. In addition, if the pain involves the corresponding nerve segments, then it may appear on the left side of the arm or scapula involving pain. The cause of swelling and pain on the left side of the navel is usually inflammation in the gastrointestinal tract that produces irritation and damage to the intestinal lining, which is felt as pain. At the same time, inflammation can lead to poor functioning of the gastrointestinal tract, which can also further contribute to the bloating sensation. In addition, the left side of the belly button is also related to gastrointestinal obstruction, if there is an intestinal obstruction, it will lead to the expansion of the intestinal tube above the obstruction, food can not pass through the intestinal tube and accumulation, causing the left side of the belly button bloating pain. In summary, the heart is not good generally does not cause swelling pain on the left side of the navel, if there is persistent swelling pain, you need to consult a doctor in a timely manner, in order to prevent irreversible damage to the abdomen.