〔Abstract〕 Objective To evaluate the application of routine ultrasound combined with contrast-enhanced ultrasound(CEUS) for the renal wound after robotic-assisted nephron-sparing surgery(RANSS)and analyze the correlation with the postoperative complications. Methods 80 patients underwent RANSS were involved. Routine ultrasound was performed to evaluate the morphological features the first day after the surgery. A classification system named the grades of ultrasound images(GUIs) was build to evaluate the severity of the renal wound. CEUS was performed on postoperative day 1 to confirm the contrast agent extravasation from the renal wound. The incidence of postoperative complications in different grades was compared, meanwhile compared in the two groups of extravasation or not. Results In GUIs, the routine ultrasound images were classified to three grades: Grade1,Grade2,Grade3. The incidence of postoperative complications increased with GUIs(P<0.05), meanwhile higher in the extravasation group(P<0.05). This trend matched up with GUIs especially in Grade 2 and 3. The incidence of the cases with extravasation increased with GUIs(P<0.05). Conclusion Routine ultrasound and CEUS are feasible to evaluate the morphologic changes of renal wound after RANSS. There is a certain correlation between the evaluation results and the postoperative complications.