Uretero-pelvic junction obstruction (UPJO) leads to impaired transport of urine from the renal pelvis to the ureter and might lead to deterioration of renal function. Congenital causes, acquired factors and presence of an aberrant crossing vessel are the etiologic factors. Surgical correction is applied in the treatment of UPJO. Minimally invasive approaches including laparoscopic and robotic approaches are increasingly being performed. Robotic pyeloplasty is most frequently applied transperitoneally. The outcomes of robotic (transperitoneal and retroperitoneal), laparoscopic and open pyeloplasties seem to be similar due to the published literature. Robotic approach has the advantages of enabling quicker tissue dissection, reconstruction, intracorporeal suturing, antegrade double-J stenting and better ergonomics for the console surgeon. Although cost is an issue for robotic surgery, being a minimally invasive surgical approach with excellent functional and surgical outcomes are the advantages in addition to better cosmetic results for the patient. In this paper, surgical technique of robotic pyeloplasty is explained and outcomes of this approach are summarized by reviewing the literature. respectively. An endoscopic suction is used for irrigation and suction of intra-abdominal body fluids (urine and blood) and smoke. An endoscopic needle holder is used to introduce and remove suture materials into the abdominal cavity. An endoscopic grasper is used to remove tissue pieces such as excised UPJ section.Following identification of the white line of Toldt, colon is identified and mobilized medially (Figure 2a and 2b). Thereafter, ureter is detected in the retroperitoneum and dissected off the surrounding structures (Figure 3a and 3b). Then, ureter is dissected up to the renal pelvis (Figure 4a-c). It is important to note and not to damage the presence of a crossing vessel that might exist in the retroperitoneum and that might cause UPJ obstruction, compressing the ureter and supplying the kidney (Figure 4a-4c). Renal pelvis is identified and fat tissue overlying the renal pelvis is dissected off. In most cases, renal pelvis appears quiet dilated and hydronephrotic ( Figure 5).A stitch by using 4/0 vicrly suture with atraumatic needle is put on the anterior site of the upper ureter in order to mark the anterior surface ( Figure 6). Then, ureter is cut above the suture completely ( Figure 7). The obstructed UPJ tissue is excised and removed for histopatho logic investigation. Thereafter, ureter is spatulated at its cut end posteriorly (Figure 8). Dilated and hydronephrotic renal pelvis is cut and removed for histopathological evaluation (Figure 9a-9c). As a result, the size and capacity of the renal pelvis is reduced to its normal limits. Figure 10 shows the appearance of the prepared renal pelvis and ureter for anastomosis. A JJ stent is inserted through the 10 mm sized assistant port into the ureter (Figure 11a). Thereafter, anastomosis between the spatulated ureter and the renal pelvis is initiated starting ...