White particles in the stool of three-month-old babies may be normal, but pathologic factors such as inflammation of the gastrointestinal tract cannot be ruled out. It can be relieved by reducing the amount of milk, medication and other methods. White particles in the stool of three-month-old babies may be milk petals, which is a normal phenomenon. At this time, you should try to reduce the baby’s dietary intake, such as letting the baby drink the milk concentration is not too high, or by reducing the amount of milk appropriately, to see if the baby’s stool situation has improved. If the baby suffers from gastroenteritis, resulting in damage to the gastrointestinal mucosa, so that the intake of protein, fat digestion and absorption is not good, there can be white particles in the stool. If it is bacterial gastroenteritis, antibacterial drugs such as cefixime and cefdinir can be taken orally for treatment, and probiotics such as Bacillus subtilis Dictyostelium granules can be used to adjust the balance of flora in the intestines. If the baby’s symptoms are not improved by the above medications, it is recommended to consult a doctor in a timely manner to complete the relevant examinations, to clarify the cause of the disease, and to target the treatment. The above medications should be used under the guidance of a doctor.