If it is an electronic thermometer that is broken, it can be disposed of as general trash, but if it is a mercury thermometer, it needs to be disposed of with care. Mercury thermometer broken, the first thing to do is to turn off the heating system in the house, open the windows in time to avoid high temperatures to accelerate the volatilization of mercury. Secondly, use a piece of cardboard or cotton swabs to collect the mercury scattered on the ground, and then put it into the water container closed. At the same time clean up the broken glass pieces to avoid lacerations. If the conditions can be collected to the environmental protection department to deal with the mercury, if not the conditions can be classified as hazardous waste disposal. For ordinary electronic thermometers can be directly disposed of as ordinary garbage, because electronic thermometers do not contain mercury, harmless to the human body. After broken, it can be disposed of directly into the corresponding garbage cans. Therefore, the disposal of broken thermometers needs to be careful, broken mercury thermometers can not be swept or disposed of with a vacuum cleaner, so as to avoid mercury diffusion in the air, which can lead to poisoning after inhalation.