Bleeding and hard lumps under the skin on the left side of the waist may be a result of lumbar injury, fibroma and other diseases. 1. Lumbar trauma: trauma may appear localized swelling, especially local hematoma caused by increased bleeding. In addition, if there is a fracture, dislocation, such as spinal fracture, transverse process fracture, etc., the local subcutaneous may have bleeding bruise long hard lumps. Fracture, dislocation and hematoma can be diagnosed by X-ray and color ultrasound. 2. Fibroma: Fibroma refers to the proliferation of fibrous tissue in different parts of the body, resulting in fibroma-like lesions, which is a benign disease. It occurs in relation to diet, growth environment, trauma, heredity, trauma, radiation and other factors. When the fibroma becomes large, there may be a feeling of pressure. It should be surgically removed immediately and sent for pathologic examination. The left side of the waist subcutaneous bleeding long hard lumps of patients are recommended to go to the hospital as early as possible to check, clarify the cause of the disease, and carry out symptomatic treatment under the guidance of the doctor. Normally, we should pay attention to a light diet, eat more vegetables and fruits, and eat less greasy food and so on.