The application of AI robots can boost the service efficiency. According to the article Benefits of Artificial Intelligence in the Restaurant Industry written by Deputy's Team (2019, August 21), for human workers, long hours of work often make them need time to rest. They sometimes get sick, which is unavoidable for human employees. Whenever it comes to holidays, human workers also need to take vacations. Humans need rest, distraction, and slow attention span during the workday. On the contrary, for robot workers, these are not problems. Robots don't need annual leave, and they never get sick – they just prepare whenever they need to. Even if the service level of the robot works 24 hours a day, 7 days a week, the service level will not decline. In addition, the robot does not go on vacation or unexpected absence. As a result, the application of robots increases working efficiency.