If the thermometer is accidentally broken, the mercury leaks out, at this time to bring down the temperature of the room, you can open the windows to ventilate, with air conditioning can open the air conditioning to prevent the broken mercury at room temperature, volatilizing into mercury vapor in the room, because mercury vapor is toxic. If the mercury fell on the ground, the ground is smooth tile, you can use a paper box or printer paper, the mercury scattered on the ground together, can be scraped from the outer perimeter to the middle, see the small mercury beads slowly converge into a large mercury ball, after gently shovel up, stored in an airtight plastic bag. If the mercury scattered on the table, the ground and other rougher planes, or fall on the bed, carpet, you can use tape to stick up the small mercury balls, after sealing tightly in a sealed plastic bag, can prevent further leakage of mercury. The collected mercury should be handed over to the local environmental protection department as much as possible and disposed of as medical waste. In addition, you should promptly open the windows of your room to ventilate.