Joining means joining a group. Can be extended to the commercial field, referring to the agent joining of commercial brands. Franchising is an enterprise organization, or a continuous contractual relationship between franchise chain headquarters and franchise stores. According to the contract, unique commercial privileges must be provided, and unconditional assistance (personnel training, organizational structure, operation and management, commodity supply and marketing) must be added. And franchisees also need to pay relative compensation. There are many types of franchising, which can be divided into voluntary franchising, entrusted franchising and franchising according to the proportion of capital contribution and mode of operation.