Takayasu's arteritis is one of the most important causes of the renovascular hypertension in orientals. Among the multiple treatment modalities, percutaneous transluminal renal angioplasty(PTRA) has become the treatment of the choice for major renal artery stenosis and is a safe, repeatable, effective procedure for the treatment of renovascular hypertension due to Takayasu's arteritis. We experienced a case of percutaneous transluminal balloon angioplasty of Takayasu's arteritis involving the proximal left renal artery. After PTRA, clinical and angiographical improvements were achieved.