The effects of Urocalun and jumping exercise upon the passage of calculi were studied. Urocalun was administered to 47 patients with ureteral stones in a dosage of 6 capsules per day and they did jumping rope skipping 50 times twice a day. The size of the calculi was grouped according to the report of Minami et al. Namely the 47 cases were divided into the following groups according to their radiographic shadow; 1) small group (not greater than 0.5 cm in diameter), 27 cases (57.4%); 2) middle-sized group (not greater than 1.0 x 0.6 cm), 11 cases (23.4%); 3) large group (larger than 1.0 x 0.6 cm), 9 cases (19.2%). As a result, the rate of spontaneous passage was 80.9% which was considerably higher than expected. There was spontaneous passage of calculus in 25 cases of small group (85.2%), in 8 cases of middle-sized group (72.7%) and in 7 cases of large group (77.8%). Especially in the large group the rate of passage was higher than described before. On the other hand the period of calculi passage was earlier than that in Minami's report. In the large group 6 of the 7 discharged stones (85.7%) were discharged within six months. Therefore, it must be observed for six months regardless of calculus size with combination therapy if possible. The effects of this prescription on the calculi passage were better than those described on other drugs and Urocalun independently. Then the strict combination therapy of the drug and the exercise was useful for the passage of calculi.