Hydronephrosis puncture and drainage in pregnant women is the main treatment method to solve hydronephrosis. Generally, hydronephrosis in pregnant women is a normal physiological reaction and most of them do not need special treatment. However, if the hydronephrosis is more serious and the pregnant woman has nausea, vomiting, hematuria and difficulty in urination, she should undergo puncture and drainage in time to treat the condition. Hydronephrosis in pregnant women is mostly caused by the compression of the ureter by the growing fetus, and in most cases it is not particularly serious, so it usually does not need to be treated. However, if the pregnant woman herself has ureteral stones, caused by the influence of the condition of hydronephrosis, and has been more serious, then you need to puncture the kidneys, and then placed the drainage tube, the water will be drained out of the body with the drainage tube, and then you need to suture the wound site, and at the same time do a good job of disinfection measures, to avoid the infection caused by inflammation, which affects the pregnant woman’s normal pregnancy. Not all hydronephrosis in pregnant women need to be treated by puncture and drainage, if it is not serious, surgery is not recommended, otherwise it may cause the pregnant woman’s body to be weak, which is not conducive to the growth and development of the fetus.