If you accidentally break a mercury thermometer, do not panic. Proper handling can effectively avoid danger. Mercury is a toxic substance, and inhaling or coming into contact with it can affect health. Here are some steps to help you safely handle this situation. First, ensure the room is well-ventilated. Open windows to maintain air circulation and help disperse any mercury vapor. Next, wear gloves to prevent direct skin contact with mercury. Avoid using a vacuum cleaner or broom for cleanup, as this could disperse the mercury into the air. Instead, use a piece of cardboard to carefully gather the mercury droplets and then use tape to stick up any remaining small droplets. If mercury falls on a carpet or other hard-to-clean surfaces, more specialized tools or help may be required. Collected mercury and debris should be placed in a sealed container, clearly labeled, and disposed of according to local hazardous waste disposal requirements. Remember, mercury should not be discarded in the trash can casually. After handling mercury, thoroughly wash your hands and any skin that may have come into contact with it. Observe your body for any symptoms of discomfort, such as headaches, nausea, etc. If any appear, seek medical attention promptly. If there are children and pets in the household, ensure they stay away from the contaminated area. To avoid such incidents from happening again, consider using an electronic thermometer. They are not only safe but also provide fast and accurate measurement results. I hope these suggestions will help you safely handle a broken mercury thermometer and protect the health of yourself and your family.