The fetus weighs about 1.6 pounds at 26 weeks of pregnancy, the average biparietal diameter is 6.68±0.61cm, the average abdominal circumference is 21.62±2.30cm, and the average femur length is 4.87±0.41cm. Each fetus grows at a different rate and there will be some individual differences, but basically they are within the above range. At 26 weeks of gestation, the fetus is basically formed, the brain responds to touch, the facial features such as eyes, nostrils and lips are slowly formed, the visual and hearing system is formed, the eyes can be opened and the subcutaneous fat gradually starts to be deposited. Pregnant women can also speak softly to the fetus to promote hearing development. At this time, the fetus begins to breathe, but the lungs are not fully developed. The pregnant woman’s body weight shifts to the lower part of the abdomen, and she may experience back pain, leg numbness, slow movement and edema during pregnancy. She should pay attention to bed rest, elevate her legs appropriately, wear loose clothes as much as possible to avoid tight clothes that may lead to poor blood circulation, and pay attention to nutritional intake to meet her needs as well as those of the fetus.