It is necessary to save the umbilical cord blood of the second child, and if the economic conditions allow, then it can be saved through a special cord blood bank. The saving of umbilical cord blood will have certain benefits, because the umbilical cord blood is rich in hematopoietic stem cells, which can be used to rebuild the immune system of the human body or hematopoietic system, and it can be used in the treatment of the target disease. When in the future, one’s self or one’s family members in the near future suffer from malignant tumors, diseases in the blood system, or cerebral palsy, or some diseases in heredity, the substances extracted by umbilical cord blood can play a certain role in treating the diseases. The preservation of cord blood is collected by specialized cord blood personnel, and through special treatment and preservation, in order to facilitate the use in the clinic, in the clinic for the cord blood storage and application of relevant regulations and requirements, is conducive to improving the treatment rate of certain target diseases in the future.