Mild fluid retention of kidney stones is mostly considered to be caused by the blockage of the ureter by kidney stones, which prevents the urine in the body from being excreted from the body. Kidney stones are the result of a variety of factors that lead to an increase in the concentration of stone-forming substances in the urine, or a decrease in solubility, which is oversaturated, and eventually form stones. The causes include metabolic abnormalities, localized infections, medications, improper diet, and urinary tract infections. If a patient with kidney stones develops mild fluid retention, it is mostly considered that localized stones block the ureter, resulting in the inability of urine stored in the body to be discharged from the body. With the development of the disease, the obstruction is further aggravated, and the fluid accumulation in the kidney will gradually worsen, and in serious cases, renal failure may occur. Patients with kidney stones may also experience symptoms such as back pain, hematuria, nausea, vomiting and irritability. Once diagnosed with kidney stones, patients need to actively cooperate with doctors to take relevant treatment measures. Daily exercise, weight control, do not overwork, regular rest and relaxation, maintain a positive attitude, avoid negative emotions.