Hello, can not be eaten together, groundnut is also known as sweet potato, sweet potato's main ingredient is starch, after eating will produce a lot of fruit acid, if eaten at the same time with persimmons, fruit acid can be cohesive with persimmon tannins, pectin, the formation of stomach stones. If the amount of food, should be at least five hours apart, if eaten at the same time, the sugar in the sweet potato in the stomach fermentation, will increase the secretion of gastric acid, and persimmons in the tannin, pectin reaction occurs precipitation cohesion, resulting in a hard lump, serious will lead to gastric ulcers or gastric hemorrhage.