Introduces the status of the quartz - feldspar flotation separation process at home and abroad, and analyzes the mechanism of various flotation processes. The results show: the flotation process changes from “hydrofluoric acid” to “Non-Fluoride with acid” and achieves a breakthrough in solving the harm of Fluoride to environment，but acid is very inconvenient to daily production, such as corrosion of equipment, so“Non-Fluoride and Non-acid” is more promising. Non-Fluoride and Non-acid has achieved experimental and theoretical results, but the actual production needs further study and improvement.