This article looks at how carbon trading works globally and in China. It talks about different types of carbon trading projects and gives advice to businesses. The main focus is to help companies join carbon trading activities. The researchers discuss quota-based carbon trading markets, voluntary greenhouse gas trading projects, and Clean Development Mechanism projects in China. They analyze what's happening with these projects and offer tips for companies that want to get involved in carbon trading. This study aims to guide enterprises in effectively participating in carbon trading activities.