Whether kidney stones affect the fetus during pregnancy needs to be analyzed on a case-by-case basis and is usually related to the size of the stone, whether the location is metastatic, and whether there are any symptoms: 1. If the stone is small, is not accompanied by urinary tract infections, and there are no clinical symptoms, it will not affect the fetus in general. At this time, you can temporarily observe and improve your daily routine. Appropriate activities can promote the peristalsis of the renal pelvis and ureter, preventing stone accumulation and aggravation. You should drink more water and urinate more often, especially at night, as drinking water helps to urinate, making it difficult for crystalline substances to precipitate and form stones, and at the same time, avoiding food that induces symptoms of renal stones, such as spinach, beans, white potatoes, etc.; 2. If the stone is large, or there is acute renal colic, difficulty in urination, nausea and vomiting, etc., the symptoms may be related to whether or not there is any transfer of stones to another location. difficulty, nausea, vomiting and other symptoms, or if the stone migrates from the kidney to the ureter and causes infection, then there will be back pain and fever, and the inflammation of the body will easily lead to a variety of complications for pregnant women, such as preterm labor, rupture of fetal membranes, miscarriage, preeclampsia and infections, which will have a certain impact on the fetus. If a pregnant woman has kidney stones with frequent pain during pregnancy, she should go to the urology department for drainage treatment or decompression treatment. If there are no multiple episodes, treatment can wait until after delivery.