In today's society, it is inevitable not to use disposable products. Our role is to reduce as much as possible and recycle and recycle even when used. Carbon Footprint Mobile (working title) is a household account book-type program that records the garbage discarded by users. You can check your garbage disposal by date, week, and month, compare it with participating groups, and connect with the calculated carbon emission of the garbage. Reducing or recycling can determine the added value of each waste, such as items with a large carbon reduction effect and items that do not need to be recycled.