There are many causes of pain in the right leg at the connection with the stomach, and the common ones are mainly the following: first, acute and chronic gastroenteritis caused by pain, in addition to diarrhea and constipation. In the treatment, but also to find out exactly what causes acute and chronic gastroenteritis attack, if it is caused by germs, should also be anti-germ treatment. If it is caused by a poor diet, attention should also be paid to improving the poor diet while treating it. Second, caused by acute and chronic appendicitis, for appendicitis disease attacks should also be timely medical treatment, so as not to cause serious physical harm to patients. Third, the presence of stones in the ureter, if the stones are small, not more than 1cm, according to the specific size of the choice through drugs, exercise and drink more water to discharge. When the stone is >1cm, it may need to be treated by surgery. Fourth, caused by sacroiliac arthritis. Fifth, caused by herniated lumbar disc pressing on the sciatic nerve. Sixth, caused by some gynecological diseases, which are only found in female patients.