Hard lumps inside the stomach may be constipation and benign and malignant tumors in the abdomen, as follows: 1, constipation, hard lumps will be formed when there is a buildup of stool in the gastrointestinal tract, usually accompanied by digestive discomfort, such as abdominal distension, abdominal pain, acid reflux, belching, nausea, vomiting, loss of appetite, patients should drink more warm honey water, pay attention to diet, eat more fresh vegetables and fruits, and enhance physical exercise, thus helping the gastrointestinal Peristalsis is accelerated; 2. Tumors in the abdomen, including benign tumors and malignant tumors, benign tumors are fibroids and lipomas in the abdominal wall, which have slow growth rate, smooth surface and movability, and are relatively small to the human body, mainly they will produce pressure on the surrounding tissues and organs. Another kind of malignant tumors, such as stomach cancer, intestinal cancer, uterine cancer, patients can feel hard lumps in the abdomen, accompanied by body wasting and weakness of limbs.