Changes in microbial counts (bacteria, yeast and mould) of osmotically dehydrated and CaCl2 infused purple sweet potatoes at both temperature (RT & 4˚C) for 25 day are shown in Figs. 7 and 8 Shelf life of potatoes samples. Microbial including bacteria, yeast and mould in potatoes are about 3 to 4 log CFU/ml, respectively. Total plate counts (TPC) increasedranged from 3.65 to 3.80 log CFU/ml after 25 day storage. While, yeast and mould counts (YMC) increased ranged from 3.64 to 3.81 log CFU/ml after 25 day storage. The samples stored at room temperature was losing more quickly than 4˚C. However, the low-temperature storage was controlled of microbial growth better than room temperature. Osmotically Dehydrated purple sweet potatoes could able withstand for 25 days under low-temperature storage. Whereas, room temperature storage was not successful on extending the shelf life (10 days) of potatoes has acidity due to microbial growth.