Many soybean-sized bumps under the skin of the abdomen may be subcutaneous lipomas, fibroids, or lymphadenitis of the abdomen and other diseases. It is usually recommended to go to a regular hospital for physical examination, along with routine blood, ultrasound and histopathological examination to clarify the cause and actively cooperate with treatment under the guidance of doctors. 1. subcutaneous lipomas and fibroids: they are mostly benign tumors, usually related to subcutaneous fat metabolism, local circulation, dietary structure and chemical environmental stimulation, etc. They may manifest as many soybean-sized bumps under the skin of the abdomen. The growth rate is usually slow. Usually the symptoms are mild or not otherwise felt, and only regular review is required, and no specific treatment is usually needed. However, if the size of the bumps gradually becomes larger or causes local pain and compression of normal tissues affecting their function, surgical removal may be considered. 2. Lymphadenitis of the abdomen: Lymph node infection of the abdomen may cause enlarged and painful lymph nodes, which may manifest as many soy-sized bumps under the skin of the abdomen, and may be accompanied by abdominal pain, nausea, vomiting, diarrhea, loss of appetite, and systemic complications such as fever and malaise. During the acute phase of inflammation, bed rest should be paid attention to, and anti-inflammatory treatment with sensitive antibiotics should be selected in a timely manner. If the infection is caused by bacteria, cephalosporin antibiotics, penicillin antibiotics, and macrolide antibiotics can be applied for treatment, which are usually very effective. In addition, the presence of specific pathogenic bacteria such as Mycobacterium tuberculosis infection should also be considered, and anti-tuberculosis drugs should be applied promptly to kill the pathogenic bacteria, along with symptomatic treatment in combination with clinical symptoms.