1. Uniform color: Healthy nails should be uniform in color without obvious white or yellow spots.
2. Complete shape: nails should be complete round or semi-circular, without depressions or protrusions.
3. Smooth surface: The nail surface should be smooth without cracks, wrinkles or depressions.
4. Moderate thickness: the thickness of nails should be moderate, neither too thick nor too thin.
5. No abnormal secretion: nails should not have abnormal secretion, such as purulent blood.
If your child's nails have any of the above abnormal conditions, you should seek medical advice in time to avoid affecting your child's health.