To explore the efficacy of integrative Chinese and western medicine on the urinary calculus after the shock wave lithotripsy. Methods:Modified Bazheng San was administered in addition to basic western medicine on 882 patients who had their urinary calculus (d≥10mm) removed by shock wave before. Results: 1) renal calculus: 201, 78, 64 patients with respective calculus diameters of <20mm、20mm ~30mm、>30 mm were cured after 1 course, or 2-3 courses within 3 months(recovery rate=93%), or 2 months (calculus empting rate=82.9%) respectively. 2) ureteral calculus: 235 patients were cured with one course, 117 patients with two or more courses, (recovery rate within 1 month=97.9%). 3) bladder calculus: 129, 28, 20 patients(d>30 mm) were cured after 1 course, or 2-3 courses within 1 month (calculus empting rate=100%), or 2 months (lithotripsy rate=98%, empting rate=98%) respectively. Conclusion: Integrative Chinese and western medicine treatment can prevent relapse of urinary calculus after shock wave lithotripsy.