Tin slag recycling is an essential activity. Tin slag refers to waste produced during wave soldering processes, containing a high tin content. Due to the limited availability of tin resources, slag recycling can effectively conserve resources and reduce environmental damage. Additionally, the tin in the slag can be reused, promoting the development of a circular economy by recycling and producing new tin materials. Various methods such as physical separation, chemical recovery, and smelting can be used to achieve slag recycling. These methods efficiently extract and separate tin elements for recycling, contributing to sustainable development. Therefore, tin slag recycling is necessary and significant.