Pheochromocytoma is a rare urological disease. The ”classic triad” consists of headache, palpitation, and diaphoresis. Hypertension is the leading clinical manifestation. Herein, we report a 44-year-old male who was admitted with the chief complaint of knowing to have an intra-abdominal tumor in a general healthy examination. A series of studies were done which revealed: I) A huge ill-defined, central necrotic lesion occupied the left supra-renal area; 2) Vanillymandelic acid: 37.8 mg/24hrs urine. Exploratory laparotomy with adrenalectomy and nephrectomy via Chevron incision was done. The final clinic pathological diagnosis was pheochromocytoma of left adrenal gland with left kidney invasion. So far, this patient has been regularly followed at our outpatient clinic with a stable condition. The literatures were reviewed.