1. Respiratory system problems: The lungs of premature infants may not be fully developed, leading to problems such as dyspnea and pneumonia.
2. Digestive system problems: The intestines of premature infants may not be fully developed, leading to feeding difficulties, diarrhea, constipation and other problems.
3. Immune system problems: The immune system of premature infants may not be strong enough to be susceptible to diseases.
4. Nervous system problems: The brain and nervous system of premature infants may not be fully developed, leading to mental retardation and dyskinesia.
5. Eye problems: The eyes of premature infants may not be fully developed, leading to vision problems.
6. Cardiovascular system problems: The heart and blood vessels of premature infants may not be fully developed, leading to problems such as heart disease and high blood pressure.
7. Anemia: Premature babies may be anemic because they have fewer red blood cells.
8. Skeletal problems: The bones of premature infants may not be fully developed, leading to problems such as fractures and deformities.
9. Temperature regulation problem: Premature infants have poor temperature regulation ability and are prone to hypothermia or hyperthermia.
10. Other problems: Premature infants may also have skin problems, hearing problems and dental problems.