Garbage sorting is an activity that classifies, stores and puts garbage into public resources according to regulations and standards. Through recycling, these wastes can be classified, reducing environmental pollution, saving resources, reducing the pollution of groundwater, soil and air, protecting forests, reducing the waste of forest resources, forming the habit of saving resources and raising everyone's awareness of environmental protection.

Garbage classification can be divided into:

1. Recyclable garbage includes waste paper, glass, metal, cloth and plastic. These rubbish can be recycled. Waste paper mainly includes newspapers, magazines, books, office paper, cartons, and various wrapping papers. However, paper towels and sanitary paper can't be recycled because they dissolve in water, so they belong to other garbage.

2. Kitchen waste: mainly food wastes such as leftovers, leftovers, bones, fruit shells, and peels and leaves are composted by biological treatment, and can be made into organic fertilizers. If there is liquid food waste in kitchen waste, we should pour it directly into the sewer.

3. harmful waste: There are mainly toxic materials that will produce heavy metals to the human body and wastes that will cause harm to the environment in harmful waste. For example, battery mercury thermometer, paint bucket and pigment cleaning chemicals, as well as petrochemical products (such as bleach) that are difficult to dissolve in nature, as well as expired drugs and so on. Waste lamps and bulbs, which are easily damaged, should be put together with packaging. We should put the discarded drugs together with the packaging.

4. Other garbage: except recyclable garbage, kitchen waste and harmful waste, the rest are all other garbage. These garbage that cannot be recycled will be disposed of in sanitary landfill. Including helpless or contaminated paper, such as paper cups, photos, postcards, diapers, toilet paper, etc., as well as disposable tableware boxes with glass plastic bags that cannot be recycled.

Broken glass and other articles with sharp edges and corners should be wrapped before we put them in, and what is inside should be written on the paper as much as possible, so as not to hurt the recycler.