The aim of present study was to investigate the moisture content, ash value and presence of phytochemicals in the rhizome extracts of Rheum emodi. The rhizome powder was analysed for moisture content and ash value detection. The extracts of rhizome were screened for the presence of phytochemicals using standard procedure. The moisture content of the powdered rhizome was 0.50 and total ash value was 6.9%. The phytochemical screening of extract reveals the presence of Carbohydrates, Fats, Phytosterols, Saponins, Flavonoids, Phenols and glycosides, while amino acids, proteins and alkaloids were absent. The presence of these phytochemicals in Rheum emodi may serve as a potential source of useful drugs in future.