In fact, there are many causes of swelling, and the parts of swelling are usually the face and feet. Generally, the causes are as follows: 1) renal swelling, such as acute and chronic nephritis, or other kidney diseases leading to swelling; 2) hepatogenic swelling, such as a variety of hepatitis, hepatitis A, B, C, and alcoholic liver diseases, or autoimmune liver diseases, liver cirrhosis leading to swelling; 3) cardiogenic swelling, such as a variety of heart diseases to finally cause heart failure, will cause generalized swelling or lower extremity swelling; 4. In addition to this, it is also endocrine related, such as endocrine diseases, such as primary aldosteronism, or poor hormone metabolism levels, such as mucus problems. So there are more causes of swelling. If a friend happens to be swollen, it is recommended to go to the hospital first to do relevant examinations, such as ultrasound, look at the heart, look at the liver and kidneys, there is no morphological problems, and then also check the blood, look at the response of liver function, kidney function, heart function, through this series of examinations to lock the problem in which place, in order to target treatment, so that the treatment is much better.