Mercury thermometer accidentally broken to open the windows to keep the air circulation in the room, wearing gloves and mask, quickly scattered on the ground to collect the mercury ball, into a small sealed bottle or plastic bag, the collection process should not be too long, otherwise the mercury will quickly evaporate into the air, collect the process to avoid direct contact between the mercury and the skin. If there is still residual mercury on the ground can not be collected, you can sprinkle some sulfur powder to neutralize the toxicity of mercury. Generally a mercury thermometer mercury content is very low, will not cause much harm to the human body. Collected mercury can not be thrown into the garbage or sewer, need to be handed over to the special environmental protection department for proper disposal, so as not to cause pollution to the environment.