The formation and development of Hangzhou metropolitan area is a strategic development process from spontaneity to voluntariness，extensive to intensive. With Hangzhou as the core，it establishes a united and competitive group with surrounding cities，and finally forms a dynamic mechanism and sustainable development. Through efficient regional collaborative governance，the one-hour urban commuter circle，and the complementary industrial division system，various cities actively integrate into the construction of Hangzhou metropolitan area and build and share social services. In this way，Hangzhou metropolitan area has achieved great development. Finally，the practice of Hangzhou metropolitan circle provides experience for other metropolitan areas.