Hard bumps under the skin of the stomach are associated with many factors, such as lipomas, swollen lymph nodes, and in some cases, hard bumps caused by the accumulation of feces. The hard bumps that appear under the skin of the stomach are related to many factors. The main one that is above the internal organs under the dermis of the skin is lipoma, which can be felt on the surface of the skin and has a certain degree of mobility and does not affect health. However, there are some people who are constipated in general, and constipation can lead to excessive absorption of water in the intestines, so they are relatively hard and can be felt as hard bumps on the abdomen when lying down. Constipation caused by abdominal lumps will also be accompanied by difficult defecation and other symptoms, these people can use bowel cleansing drugs to relieve, and diet should eat more dietary fiber-rich food, these foods can stimulate intestinal peristalsis, so help improve the symptoms of constipation.