Abstract：This article introduces Professor HE Wei′s clinical experience in treating steroid-induced osteonecrosis based on the concept of peri-collapse period. Professor HE Wei believes that the root pathogenesis of steroid-induced osteonecrosis lies in kidney injury caused by medicinal toxin， and blood stasis obstructs the vessels as the branch. During clinical diagnosis and treatment，Professor HE Wei advocates assessing the stability of the femoral head during the peri-collapse stage， classifying it as either stable or unstable avascular necrosis. Based on this classification， appropriate treatment strategies should be selected：conservative therapy is applied for stable lesions，while unstable lesions are further stratified for targeted management—with some cases undergoing surgical intervention， and others adopting a combined approach integrating surgery with Chinese medicine. Chinese medicine runs throughout the process. It focuses on tonifying the kidney essence to consolidate the root and is supplemented by activating blood circulation and unblocking collaterals so as to achieve favorable clinical effects.