Mercury thermometer broke, the volatile mercury generally does not reach the standard of poisoning, but if accidentally taken by mistake, about half an hour may have symptoms of poisoning. About half an hour after accidentally taking mercury, there will generally be gastrointestinal reactions, such as nausea, vomiting, abdominal pain, diarrhea, etc. You can drink some milk to play a role in protecting the gastric mucosa, which needs to be promptly sent to the hospital emergency department for treatment. To avoid poisoning, after breaking the mercury thermometer, you should open the window and keep good ventilation; then collect the mercury balls that fall on the ground and seal them in a small bottle, this process should be noted, be sure to wear gloves, hands try not to contact with the mercury; send the collected mercury to the environmental protection department or chemical laboratory for safekeeping. After breaking the mercury thermometer, we should not only pay attention to the treatment of the mercury flowing out, but also the thermometer and the debris put away to avoid accidental scratches. Normally, you should try to put the thermometer where the child can not touch it to avoid accidents.