Abdominal distension with hard lumps in touch may be caused by the following diseases: abdominal tumor, intestinal obstruction, peri-appendiceal abscess, etc. 1. Abdominal tumors: including benign tumors, such as hepatic hemangioma, etc., and malignant tumors, such as colorectal cancer, liver cancer, etc., which will affect the body’s ability of digestion and absorption, and thus be able to lead to abdominal distension, and hard lumps in the abdomen can be touched due to the occurrence of abdominal cavity swelling. 2. Intestinal obstruction: if the intestinal tract has adhesion, fecal stone, etc., it may lead to intestinal obstruction, which will lead to abdominal distension. When the condition is serious, the intestinal tube will be dilated and gas and fluid will accumulate, which will be manifested as hard lumps in the abdomen. 3. Peri-appendiceal abscess: due to acute appendicitis, hard lumps will appear in the right lower abdomen, and there is pressure pain, due to inflammation, gastrointestinal function is often poor, which will lead to abdominal distension. Patients can go to the hospital, need to improve the ultrasound, CT and other tests, combined with physical examination, usually can be a clear diagnosis, follow the doctor’s instructions for treatment.