The waste liquid sorting recycling barrel is a specialized teaching tool used in chemical experiment teaching to standardize the treatment of experimental waste liquid. It usually consists of multiple partitioned bins labeled with different types of waste liquid, equipped with corresponding color markings and leak proof covers. In teaching, it guides students to classify and dispose of waste liquids according to their properties, avoiding reactions caused by mixing waste liquids of different properties. Suitable for middle school chemistry laboratories, it not only prevents waste liquid from polluting the environment, but also cultivates students' environmental awareness and responsibility. It is an important tool for implementing "experimental safety and environmental education".