We treated 122 patients with lithiasis in the urinary system from 1996 to 1999. Among them, 36 cases suffered from renal calculus and 86 from ureterolith; 80 were male and 42 female. The longest duration of disease was 20 years and the shortest 3 days. Through ultrasonic examination, it was shown that the largest stone was 10 mm×8 mm and the smallest about 3 mm×4 mm. Two groups of acupoints selected were 1) Shenshu (BL 23), Jingmen (GB 25), Yanglingquan (GB 34) and Feiyang (BL 58); and 2) Guanyuan (CV 4), Shuidao (ST 28), Yinlingquan (SP 9) and Sanyinjiao (SP 6) that were used alternately, one time a day. The needles were retained for 30 minutes. In addition, Ershenmen (MA TF 1) and Jiaogan (MA AH 7) were supplemented for renal colic; Xuehai (SP 10) and Taichong (LR 3) for urodynia and hematuria; Quchi (LI 11) and Dazhui (GV 14) for fever, Zusanli (ST 36) and Taixi (KI 3) for asthenia. When the first acupoint group used, the patient with unilateral lithiasis was asked to take lateral decubitus with the affected side being upwards. In treatment of bilateral lithiasis, the patient was asked to take prone position. Shenshu (BL 23) was stimulated with electroacupuncture (EA) after "Deqi", and the rest acupoints were stimulated with reducing needling method. When the second point group used, the patient was ordered to take supine position. Guanyuan (CV 4) and Shuidao (ST 28) were also stimulated with EA after "Deqi" and the rest acupoints were stimulated with reducing needling method. For patients with weak constitution, Zusanli (ST 36) and Taixi (KI 3) were stimulated with reinforcing needling method. Chinese medicinal herbs employed were Jinqiancao (Herba Lysimachiae), Haijinsha (Spora Lygodii), Cheqiancao (Herba Plantaginis), Jineijin (Endothelium Corneum Gigeriae Galli), Chuanshanjia (Squama Manitis), Huashi (Talcum), Shiwei (Folium Pyrrosiae), Fuling (Poria) and Baimaogen (Rhizoma Imperatae), combined with Yinhua (Flos Lonicerae) and Lianqiao (Fructurs Forsythiae) for fever; with Huangqin (Radix Scutellariae),
