Antidiarrheal milk powder and formula for children with diarrhea and lactose intolerance should not be mixed, for other children can be mixed, but it is best not to mix for a long time. Antidiarrheal milk powder is mostly low-lactose or lactose-free milk powder, suitable for children with diarrhea or lactose intolerance. Formula is the milk powder that normal babies can eat, which contains relatively more lactose, for children with diarrhea and lactose intolerance, it is best not to mix formula together, but only to take antidiarrheal milk powder. If the diarrhea is cured and the lactose is tolerated, anti-diarrhea milk powder can be mixed with formula if there is any left over, but since the amount of water added to each type of milk powder is not the same, resulting in the ratio of water is difficult to adjust, so it is not recommended to consume this way for a long period of time. If a child has symptoms of diarrhea, it is recommended to go to the hospital and take appropriate measures under the guidance of the doctor.