Rice is the main food a half of the world’s population. Approximately 90% of the world’s rice is grown and consumed in Asia. Thailand is a major production and consumption of rice throughout improving strains of rice all the time. Currently, consumers tend to eat more brown rice, especially black brown rice. Black brown rice is high nutrition values , enriched with anthocyanin and proanthocyadinin that are beneficial for health and reduces the risk of illness. Then, consumer’s demand to consume rice increasingly but the price of rice is uncertain because of an increasing competitive in the world’s market and trade barrier measures to import rice from various countries. The processed rice is produced into various products , which is an alternative to solve the problem and also help increase the value of rice. The production of quality products, the quality of rice slurry is one important factor. This report demonstrated preparation variables affecting quality of rice slurry. The variables such as rice flour to water ratio , temperature , time , homogenization and pH in different preparations result to the quality of rice slurry are different. Therefore, the production need to control variables in preparation for proper to achieve quality rice slurry and lead to quality product and accept consumer