[Objective] To discuss the interrelation of CYP3A gene polymorphism and glucocorticoid osteoporosis in the han nationality in yunnan.[Method] Collecting the clinical data of 98patients treated with glucocorticoid(GC) and 91 volunteers in han nationality in yunnan.Based on the selected and eliminate standard, dividing into the glucocorticoid groud (GC group) and the control group (NC group).And using the dexa to test the density of lumbar spine.According to the Z value of bone density, the GC group can be di...