Bun is a type of Vietnamese rice noodle used to make soup with soya sprouts, dill, split water spinach, cilantro, onion, broth and either beef or pork , . It is very convenient, easy to cook, delicious and nutritionally rich and is now gaining great appraisal outside of Vietnam. Currently, Bun is just produced by milled white rice. This article will present new researches to make the Bun from brown rice, a product that is getting more and more attractive due to having more nutrition than milled white rice . The mini Bun machine, which produces Bun with brown rice that can be replaced in restaurants to produce fresh rice bun noodle directly to serve customers, is still a challenge. The purpose of this article is to design and development the mini Bun machine for making bun from brown rice with small dimension with the capacity of 25 kg of bun/ hour by using extruding screw. The Bun which is produced on Proposed design is checked in both quality and food safety.