Experiment was conduct to evaluate the performance of attrition mill used in the finger millet processing industries in South India. The treatments of the experiment include three plate clearances (0.3, 0.5 &0.7 mm), three plate speeds (450, 600 &700 rpm) and three feed rates (90, 100 & 115 kg\hr). The experiment was conducted in Factorial Completely Randomized Design (FCRD), having plate clearance, feed rate and plate speed as treatments and analyzed statistically. GPU-28 variety of cleaned finger millet having 10 per cent moisture (w.b) was used as feed material to find out the performance of attrition mill. The study indicated that at 0.3 mm plate clearance, 100 kg/hr feed rate and 600 rpm plate speed combinations; milling efficiency of the attrition mill was 85 per cent. The flour samples after milling were sieved using BS 30 sieves and analyzed for fineness of flour at different plate clearances, plate speeds and feed rates. It was observed that the fineness modulus of 2.04 was recorded at 0.3 mm plate clearance, 100 kg/hr feed rate and 600 rpm plate speed combinations.