In Part I, the renal function in renal calculus had been described, and now, in this Part II, a few researches on the reral function in 59 cases of ureteral calculus were performed by examining the fluid test, indigocarmin and phenolsulfonphthalein excretion test, and the following results were obtained: (1) Concerning the fluid test, 33 cases had insufficiency of renal function of various degrees, including 18 cases (30%) of insufficiency both in excretion and concentration abilities, 14 cases (24%) of insufficiency only in concentration ability and 1 case (2%) of insufficiency only in excretion ability. (2) By assorting the results of the fluid test into 3 types by means of the relation between the urine excretion quantity and the specific garvity, 43 cases (73%) belonged to type I (complete type), 14 cases (24%) to type III (incomplete type), and 2 cases (3%) to type II (prolonged type). Besides, 23% of type I, 37% of type II and all of type III had renal insufficiency. (3) 30% of the unilateral cases and 50% of the bilateral cases had insufficiency of excretion ability, 49% of the unilateral cases and 80% of the bilteral cases expressed insufficiency of concentration ability, that is to say, the bilateral cases showed higher percentage of renal insufficiency than the unilateral cases. Moreover, the insufficiency of excretion ability was found in 30% and the insufficiency of concentration ability in 50% of the 59 cases, so the concentration ability was affected more frequently than the excretion ability. (4) In indigocarmin excretion test; concerning the unilateral cases, 21% of the cases showed normal excretion from both kidneys, 62% with hindrance in the affected side, and 17% with hindrance in both sides, and in the bilateral cases, 75% of them showed hindrance in both sides and 25% showed hindrance in one, and none with normal excretion from both kidneys. (5) In phenolsulfonphthalein test, 18% of the cases showed hindrance in its excretion, when this is classified, 14% in unilateral and 34% in bilateral cases. (6) Influence of the dilatation of renal pelvis, calyces and ureter to renal function could not be seen. (7) In ureteral calculus, the sizes of the stones had a intimate connection to the renal function. 71% of the patients with large stones (stones larger than lom in minor axis), 60% with medium size (stones larger than 0.6cm in minor axis) and 47% with small stones (stones smaller than 0.5cm in minor axis) showed more or less renal insufficiency and, that is, the percentage of renal insuffieiency grows higher in proportion to the size of the renal calculus. (8) Renal insufficiency depends on the situation of the obstruction of the ureter due to the stone.