1. Observe the baby's weight and height: the baby's weight and height should be within the normal range, which can be determined by regular measurement and comparison with the growth curve of children.
2. Pay attention to the baby's diet and sleep: the baby should have good eating habits and take in enough nutrition. At the same time, they should have regular sleep time and get enough rest.
3. Observe the baby's activity level: the baby should have enough activity, including crawling, standing and walking. If the baby shows abnormal laziness or lack of vitality, it may need further examination.
4. Pay attention to the baby's defecation: the baby's defecation should be normal yellow soft stool, and the urine is transparent or light yellow. If your baby has abnormal defecation color, texture or frequency, or abnormal urine color, you may need to consult a doctor.
5. Observe the baby's emotions and behaviors: the baby should show happy, lively and curious emotions. If your baby has abnormal mood swings, crying or abnormal behavior, you may need to see a doctor.
6. Regular physical examination: It is very important to take your baby to a pediatrician for regular physical examination. Doctors can evaluate the baby's health through physical examination, auscultation and observation.
Please note that the above are just some commonly used indicators and methods. If you have any questions or concerns about your baby's physical condition, you'd better consult a professional pediatrician for detailed evaluation and suggestions.