Without double kidney patients will not have urine and there is no problem of urination. The kidneys filter the water, electrolytes and metabolic wastes in the blood, which are filtered through the glomeruli and reabsorbed by the tubules, and finally produce urine, which is excreted out of the body to maintain the water-electrolyte and metabolic balance of the body. When bilateral kidneys are missing, without kidneys to filter the water and electrolytes in the blood, no urine will be produced and the patient will not have any urge to urinate and no urination action will be produced. Treatment can be either kidney transplantation or choose long-term maintenance dialysis. Currently, kidney transplantation can be done to find a suitable kidney source among family members’ relatives for transplantation, which can metabolize water, electrolytes and metabolize toxins to maintain normal urine after successful transplantation. Without kidney transplantation, the patient can only rely on artificial dialysis, during which the patient has no urine and does not need to urinate.