enjoying delicious food belongs to physiological needs and safety needs.

American psychologist Abrahan H.Maslow put forward the "hierarchy of needs theory" in 1943. Maslow believes that people's needs can be summarized into five categories, namely, physical needs, safety needs, social needs, respect needs and self-realization needs. ① Physiological needs are the most basic and primitive instinctive needs of human survival, including feeding, drinking, sleeping, courtship and so on. ② Safety needs are the extension of physiological needs. After people's physiological needs are properly met, they will have safety needs, including the need for the safety of life and property not to be infringed, the need for good health and the need for safe and stable living conditions. ③ Social needs refer to the needs of feelings and belonging, including interpersonal communication, friendship, acceptance and recognition by groups and society. This need reflects that people have clear social needs and interpersonal needs. 4 Respect needs, including self-respect and being respected. The former includes psychological satisfaction such as self-esteem, self-confidence and pride; The latter includes satisfaction such as reputation, status and non-discrimination. (5) the need for self-realization, which is the highest-level need, refers to the need for people to play their own abilities and realize their own ideals and values.