1. Weight gain: The baby's weight gain is one of the important indicators to measure his health. In the first few months after birth, babies should gain proper weight every week. You can consult a pediatrician or use a child's growth curve to learn about your baby's weight gain.
2. Sleep and diet: The baby's sleep and diet are also important factors in evaluating health. Normal babies should have regular sleep time and adequate food intake. If you feel that your baby is sleeping or eating abnormally, it is recommended to consult a pediatrician.
3. Urination and defecation: Urination and defecation of infants is an important index to evaluate their digestive system function. A normal baby should have many times of diapers and defecation every day. If you feel that your baby has any abnormal urination or defecation, it is recommended to consult a pediatrician.
4. Skin and hair: Observing the baby's skin and hair can also provide some health clues. A healthy baby should have smooth skin, no rash, no redness, and thick and shiny hair. If you find that your baby's skin or hair is abnormal, it is recommended to consult a pediatrician.
5. Activity level: The activity level of infants is also one of the important indicators to evaluate their health status. A normal baby should have enough activities, including hand and foot movements and eye contact. If you feel that your baby's activity level is abnormal, it is recommended to consult a pediatrician. These are just some commonly used indicators and methods. If you have any questions about your baby's health, you'd better consult a professional pediatrician for detailed evaluation and suggestions.