1. High school education or above: Most airlines require flight attendants to graduate from high school (or equivalent), which is the most basic entry requirement. High school education can show that candidates have a certain basic education background and can meet the basic knowledge and skills needed for daily work.

2. Excellent foreign language skills: The aviation industry is an international industry, so flight attendants usually need to have good foreign language skills, especially English. Many airlines require flight attendants to be fluent in English in order to communicate with international passengers.

3. Academic qualifications: Some airlines, especially internationally renowned large airlines, may have higher academic qualifications for flight attendants. Some companies may require a bachelor's degree or higher, which may become a competitive advantage on some international routes.

4. Professional background: Although not required, some airlines may give priority to candidates with relevant professional background, such as tourism, hotel management, service industry, etc.

5. Training and certification: Flight attendants usually need the training provided by airlines after joining the job, including training in service etiquette and emergency handling. Some countries or regions also need flight attendants to obtain relevant flight attendant certification to ensure that they have the ability to deal with emergencies during flight.

It is worth noting that the job of flight attendant is not only a profession, but also a reflection of service attitude and professionalism. Airlines usually attach importance to the appearance, temperament, communication skills and teamwork ability of candidates, because these factors are very important for good interaction with passengers and crew members during the flight.