Suggestion: Grapes, cocoa, oranges, tomatoes and plums are all fruits with high oxalic acid content, so kidney calculi patients should eat less of these fruits. Secondly, fruits with high sugar content should not be eaten, but you can eat more. Fruits rich in vitamin B 1 and vitamin C are good for dissolving kidney calculi. Kidney calculi patients had better drink water, so fruits with high water content, such as watermelons and pears, can also be eaten.