A strong echo of 8mm in the lower pole calyx of the right kidney usually suggests that there is a stone of 8mm in the right calyx. At this time, we can review the CT, and then carry out lithotripsy drug treatment, if necessary, give lithotripsy and other surgical treatment. Ultrasonography is an effective examination for kidney stones, which can clearly reflect the location, size and number of stones, and CT examination is a supplementary examination for kidney stones, which can more accurately determine the size and number of stones, and the two examinations are complementary to each other, which can clearly and accurately reflect the situation of stones in the kidneys. When there are 8mm stones in the right calyx, CT review should be performed first to determine the number and size of stones, and according to the number and size of stones, absolute treatment methods, such as medication or extracorporeal lithotripsy treatment. It is recommended that patients with strong echogenicity in the renal calyx should consult the hospital in time, complete the relevant examinations under the guidance of the doctor, and take active treatment to avoid the development of the disease.