If you accidentally break the mercury thermometer, you should avoid letting the human body inhale the evaporated mercury element and lead to mercury poisoning. You should open all doors and windows inside and outside the house to keep ventilation and dryness to accelerate the evaporation of mercury in order to reduce the mercury ion content inside the house and reduce the probability of human poisoning. You should also check your body, such as underarms, mouth or the place where the thermometer is clamped for injuries, as mercury can enter the body through the broken skin surface and cause mercury poisoning. If the body is not injured skin lesions and injuries, you should quickly sweep the mercury on the ground, the mercury on the ground can not be directly swept with a broom, the mercury will be adsorbed on the broom and cause secondary pollution, you should sprinkle sulfur powder on the ground of mercury. You can also use flour, egg white instead of sulfur powder, or sprinkle with clay on the ground with mercury, then you can clean, clean out the mercury with a small amount of paper carefully ingredients wrapped up, but not arbitrarily discarded to avoid pollution of the environment.