目的：通过对术中假体放置位置的研究，使隆胸后乳房形态更加完美。方法站立位标记乳房边界，并记录其在肋骨上的投影。平卧位以肋骨上的投影为依据，将其反投影与体表。分离时略超出此范围1．5厘米，假体植入此腔隙位置准确。站立时自身乳腺与假体才能重合，融为一体。结果对300例患者进行手术，按照上述方法设计，术后乳房形态均自然，患者满意。结论此种定位方法很较确切，为分离腔隙提供准确范围。术后假体与自身乳房完全重合融为一体，乳房形态自然逼真。“,”Objective to investigate a proper position of the prosthesis in breast augmentation,which make shape of breast more natural and beautiful.Methods:The position of prosthesis was identified by two marks.One mark was made by the epicostal projection of breast borderline with standing position.The other mark was the backprojection of epicostal projection with prostra-tion position.The prosthesis was implanted within this mark with 1.5cm extension.Results:The shape of the breast was natural for 300 patients after this kind of implantation.The patients are satisfied with the breast augmentation.Conclusion:our study indicates a proper position of the prosthesis,which makes breast more natural and beautiful.