Low creatinine during pregnancy mostly indicates the presence of anemia and malnutrition in women, and creatinine is a kidney function test. When a woman has low creatinine after pregnancy, she should eat as much nutritious food as possible. She should eat more protein-containing food, such as fish, eggs, fish and shrimp, etc. She should also eat fresh vegetables and fruits to replenish her vitamin, trace elements and mineral needs. During pregnancy, it is necessary not only to dynamically observe the growth and development of the fetus under the ultrasound, but also to pay attention to the adequacy of the pregnant woman’s own nutritional supply, which is the only way to ensure the growth and development of the fetus. Therefore, women need to do the maternity checkups on time after pregnancy and regularly observe the changes in blood pressure, weight and abdominal circumference of pregnant women.