Mercury in a thermometer that falls to the ground should be immediately ventilated by opening a window to accelerate evaporation, or shoveled away with cardboard and placed in a sealed bottle to be handled by a professional. Mercury, also known as mercury, is a highly toxic heavy metal. If the thermometer is broken, mercury fell to the ground, if it is indoors, you should immediately open the doors and windows, increase the speed of indoor air circulation, to accelerate the volatilization, indoor temporary residence. If it is an outdoor environment, it should be dispersed around people, especially children. Because mercury can breathe through the air volatilization into the human body, damage to the nerve center, affecting human health. In addition, mercury can not be directly touched by hand, you should use a hard cardboard, or wear a mask, gloves, gently wrapped in paper towels placed in a sealed bottle, to the professionals to deal with. Can not be thrown into the garbage cans or sewers, etc., so as not to contaminate the ground, water.