After breaking a mercury thermometer, the site should promptly clean up the outflow of mercury liquid, it will not lead to poisoning phenomenon. Never avoid direct hand contact with mercury, on the one hand, there may be a very small amount of mercury absorbed through the skin, on the other hand, there will also be allergic dermatitis. Step 1: Turn off the heating device in the house and then open the windows and doors for ventilation. Step 2: Put on a mask and gloves, then use a piece of paper or cotton swab to collect the scattered mercury beads into a container of water. The water container will be airtight, and for insurance purposes you can then wrap the bottle around the mouth with tape a few times, but remember that you need to label the container with the mercury inside and then hand it over to the environmental protection department for disposal.