There are five levels; junior cook, intermediate cook, senior cook, cooking technician, senior cooking technician.

The chef's certificate, as the national labor security department issued by the national vocational qualification certificate, is a chef seeking employment, employment, business qualification credentials.

The chef, a person who takes cooking as his profession and prepares dishes as his main work content, had a full-time chef in the slave society.

With the continuous improvement of the material civilization of the society, the profession of chef has been developing, and the team of full-time chefs has been expanding.

In the early 21st century, the world's chef team has grown to tens of millions of people, China has been known as the Kingdom of cooking in the world, chef power and the number of people second to none.

Chefs are in a way the second parents of mankind, and the world's non-governmental organizations have agreed to designate October 20 as Chef's Day.