本研究主要是探討試片表面粗糙度對其陽極處理的影響。實驗使用的材料為1050 與5052 鋁合金，利用不同的噴砂磨料與噴砂壓力改變試片表面粗糙度，陽極處理採直流電硫酸法。實驗中利用資料擷取系統紀錄電極電壓變化，使用分光式色差計、光澤度計與粗糙度儀量測試片表面型態。 實驗結果發現鐵粉磨料噴砂可以得到圓形坑洞，磨料碎裂情況輕微，在後續鹼洗、化拋及陽極處理都與氧化鋁粉磨料噴砂的有所不同。氧化鋁粉磨料噴砂可以得到角形坑洞，磨料碎裂情況嚴重。高低粗糙度與圓形、角形坑洞對鹼洗和化學拋光都有不一樣的影響，進而影響陽極處理後的外觀型態。 Effects of surface roughness on the qualities of aluminum alloy (1050 and 5052-H32) were studied in the present work. Tow powders (iron and alumina) were used along with tow blasting pressure. In the anodizing process, D.C. and diluted sulfate acid (15﹪) were used. During anodizing process, relation of voltage and time were record. To realize the surface morphology and cosmetic appearance, the surface roughness tester, spectrophotometer and glossmeter were used to obtain gloss, L*a*b value. When the iron (#80) and alumina powder (#80) were used as blasting abrasive, the cavities shown on the specimen surface were round and polyhedral, respectively. Based on sieve analysis, the alumina powder was fracture during blasting. The iron powder suffer a high degree of wear and tear. This result in two types of cavities on the specimen surface and influenced the tested, the gloss and L*a*b of specimen after alkaline etching, chemical polishing and anodizing treatment.