“…Spontaneous renal rupture usually occurs after upper urinary calculi-related operation treatment or renal tumor, [ 2 , 4 ] it has also been reported during pregnancy, [ 5 ] transplant kidney and nephritis. [ 6 , 7 ] According to the location of renal rupture, it can be divided into renal parenchyma rupture, collecting system rupture or mixed rupture, [ 1 ] patient may experience corresponding symptoms, such as pain, hematuresis and Wunderlich syndrome. [ 7 ] The patient did not have any obstruction and tumor, but this patient has a compensatorily enlarged left kidney due to the atrophy of the right kidney, this left kidney may be relatively fragile, more importantly, the patient has hemophilia, which is a bleeding-prone disease for the lack of clotting factor.…”