With the development of society, the improvement of living standards, the popularization of the concept of eugenics, the fetus to grow in the mother in October, how to have a healthy baby is vital, pre-conception in addition to other eugenic examination, according to the current clinical increase in pregnant women suffering from urinary stones, especially ureteral stones, the onset of pain patients, a large number of pain relief drugs and antibiotics may have an impact on the development of the fetus The use of a large number of painkillers and antibiotics may affect the development of the fetus and even cause fetal malformation. The use of drugs or not, and how to use drugs, has become a difficult problem for patients, their families and clinicians, and related tests and treatments cannot be performed. Therefore, it is recommended that women should have a urinary ultrasound before pregnancy, in addition to other eugenic examinations, to exclude urinary stones, so that they can be detected and treated early before pregnancy and avoid the effects on the pregnant woman and the fetus after pregnancy. Before and after pregnancy, we should do the following: 1. Eat a light diet, drink more water and exercise properly to reduce the occurrence of stones; 2. Eat less food with high calcium content, such as less soy products soy foods are high in oxalate and phosphate, which can fuse with calcium in the kidney and form stones. 3, eat less oxalate food containing high oxalate food are tomatoes, spinach, strawberries, beets, chocolate, etc., too high oxalate intake is also one of the main causes of kidney stones. 4, limited intake of sugar, high sugar food intake can increase the chance of developing kidney stones, therefore, pay attention to eat less sweets. 5, pregnant women who have a history of kidney stones should not drink milk before bedtime as well as protein in excess. 6, eat less calcium products, pregnant women who need calcium supplements as little as possible, if necessary, more sunshine to supplement the demand for calcium of pregnant women and fetuses during pregnancy.