As people's pursuit of quality of life continues to improve, craft beer has quietly become popular, and small breweries have also risen rapidly in recent years, becoming a new force that cannot be ignored in the beverage market. They are fundamentally different from the traditional large breweries we are familiar with, whether in production scale, process flow, or cultural concepts and market positioning. This article will start from multiple dimensions, deeply explore the main differences between small breweries and large breweries, and extend the classification and cost of small brewing equipment to show the diversity of the craft beer industry chain.