Abdominal pain that is hard to the touch may be caused by constipation, inguinal hernia, peritonitis and other diseases, as well as other diseases such as cirrhosis. 1. Constipation: There are various causes of constipation, including hemorrhoids, organic lesions of the anus and other factors. The main symptoms of patients are lower abdominal distension and pain, loss of appetite, fecal dryness and lumps, blood in the stool, etc. Patients will also experience fatigue and weakness, dizziness, insomnia and other symptoms. 2. Inguinal hernia: the cause of inguinal hernia is not yet clear, and it is considered to be related to the weakness of the abdominal wall and increased intra-abdominal pressure. Patients will have abdominal mass, local distension, constipation, vomiting and other symptoms, but also abdominal distension, intestinal death, intestinal perforation and other symptoms. 3. Peritonitis: Peritonitis is mainly caused by the decline of self-resistance or other diseases such as appendicitis, and the main symptoms of patients are abdominal pain, nausea, vomiting, fever, impaired consciousness and other symptoms. In addition, patients will also have weakness, fast pulse and other symptoms, which will lead to abdominal pain and hardness to the touch. 4. Other: Cirrhosis, intestinal cancer and other diseases can also cause abdominal pain and hardness to touch. When patients have abdominal pain and hardness to touch, they should consult doctor in time and follow the doctor’s instruction for treatment.