A hard lump at the appendix, without pain, may be cancer, or it may be caused by physiological factors, lipoma and other factors. 1. Cecum cancer: it is usually caused by dietary factors, genetic factors and other factors that lead to malignant tumors at the cecum. In the clinic, patients often present with masses in the right lower abdomen, and may have abdominal pain and blood in stool. Patients need to be guided by the doctor, according to the colonoscopy, to determine whether the tumor. 2. Physiological factors: patients consume too much indigestible food, which may be stagnated in the cecum, resulting in hard lumps in the cecum without pain. 3. Lipoma: the cause of lipoma is not clear, usually related to genetic factors, abnormal fat metabolism, etc., patients will feel hard lumps in the cecum, which are often painless hard lumps of small size, confined to the subcutaneous area. Patients with hard lumps in the cecum, painless and other reasons, should go to the hospital in time for examination and treatment, so as to avoid delaying the condition and adverse consequences.