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 accumulation of persistent stools in the gastrointestinal tract, which is usually accompanied by digestive discomforts, such as abdominal distension, abdominal pain, acid reflux, belching, nausea, vomiting and loss of appetite, patients should drink warm honey water, pay attention to their diets and eat more fresh vegetables and fruits, and enhance their exercise so as to help gastrointestinal Peristalsis speed up; 2, abdominal tumors, including benign tumors and malignant tumors, benign tumors have abdominal wall fibroids, lipomas, etc., slow growth rate, smooth surface, mobility, relatively small on the human body, mainly on the surrounding tissues and organs will produce compression. The other kind is 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.