1.Economic requirements: to join McDonald's need sufficient financial strength and management experience. Franchisees should have enough money to meet the requirements of the McDonald's headquarters and be able to provide enough business plan to prove their management ability.

2. Store location requirements: In county-level cities, McDonald's will take into account local population density, consumption levels, transportation convenience and other factors to ensure that the store's operations can obtain sufficient customer traffic and profits.

3. Compliance with business management regulations: Franchisees need to comply with McDonald's headquarters business management regulations, including product quality, service standards, staff training and other requirements.