The yellow color of colostrum is relatively normal. Generally speaking, colostrum appears 3-5 days after the mother gives birth, mostly no more than 7 days, and is often pale yellow in color and has a thicker texture. The color of colostrum has more to do with the content of its components, which are mainly protein-rich at the beginning, but as time goes by, the protein content gradually decreases while the sugar content gradually increases, and the milk gradually turns from yellow to white. Colostrum is a natural food for infants, and compared to mature milk, colostrum is low in fat and lactose, which is easily digested and absorbed by the intestines and can also help with excretion. The large amount of immunoglobulins contained in it can enhance the resistance of newborns, and it also contains a large amount of trace elements that can promote the growth and development of babies, so the value of colostrum is still relatively high. It should be noted that the quality and quantity of milk secretion after delivery is related to the nutritional status of the pregnant woman herself, her personal constitution and hormone levels. It is recommended that pregnant women should strengthen the intake of nutrients at this time and eat more high-protein and low-fat foods such as fish and chicken, as well as vegetables and fruits rich in vitamins and minerals. It is also important to avoid exertion and to keep your mind happy and get enough sleep.