Stones are lumpy solids that form in the cavities of organs in the body and in the ductal cavities of the body, and are commonly found in kidney stones, gallstones, bladder stones, and so on. Their traits, shapes, colors and textures are so diverse that they cannot be generalized. 1. Kidney stones: Kidney stones are caused by factors such as increased concentration or decreased solubility of stone-forming substances in the urine, and patients will experience symptoms such as lower back pain, hematuria, lithiasis, urinary tract infections, as well as nausea, vomiting, and irritability. 2. Gallstones: Gallstones are mainly due to environmental, genetic and other factors, the patient’s main symptoms are biliary colic, abdominal pain, high fever, jaundice, etc., and some patients will also be accompanied by abdominal distension, diarrhea, anorexia, nausea and other symptoms. 3. Bladder stones: bladder stones are caused by the retention of urine in the bladder can not be emptied, the patient’s typical symptoms of lower abdominal pain, dysuria, hematuria, recurrent urinary tract infections. Stones also include intrahepatic bile duct stones, ureteral stones, conjunctival stones and other stone diseases, patients with symptoms of discomfort should consult a doctor in a timely manner to identify the cause of the disease, and comply with the doctor’s instructions for treatment.