If you have kidney stones during pregnancy, you need to avoid high protein or high calorie foods in your diet. Long-term nutritional overload can lead to stone formation, at the same time, you need to drink more water and urinate more, maintain a daily water intake of more than 2000ml, can prevent the occurrence of stones. In the diet need to reduce excessive intake of nuts, nuts contain more oxalic acid or purine components, a long time a large intake can increase the probability of suffering from stones. Salt intake needs to be reduced in the course of the diet, too much salt can lead to the probability of stone formation. A high-fat diet can also promote a decrease in intestinal absorption of calcium and therefore an increase in calcium excretion from the urine, so overly fatty, high-fat substances can increase the probability of having urinary stones. Strong tea, coffee, cocoa, chocolate, etc. are rich in oxalic acid, excessive consumption of these foods or drinks will increase the probability of suffering from stones. And spinach, lettuce, seafood products contain relatively high oxalic acid and purine content, too much consumption can also increase the probability of suffering from stones.