text: what is the best way for a 9 years old girl to stop peeing in the bed during sleeping?   depending upon the underlying cause, there could be several things you could try.  one is limiting the amount of fluid intake before bedtime, another is establishing a pattern of using the bathroom right before bedtime regularly.  in some cases, the child may be a very sound sleeper and they make some devices that can be used to sound an alarm at signs of moisture.  possible causes to this problem could be physiological, such as slow development or some type of blockage of the nerves that sense a full bladder, although sometimes the cause can be psychological too, caused by a major change in a child's life.  (such as moving to a new home, switching schools, divorce or death in the family, etc.)  if limiting fluids and establishing a pattern don't seem to work, you should consult the family physician for further guidance.