Because others can see it, but they can't eat it. Have something that others want to have but can't have at the moment. This psychological sense of accomplishment, satisfaction and happiness need not be described by scarcity. Due to the fast pace of life of modern people, especially the pressure of life in big cities, people who often bask in food in their circle of friends not only dazzle food, but also make their inner loneliness need to be concerned and friends need to pay attention to it in their lives. This kind of person will send some photos of delicious food to his circle of friends, and they will always pay attention to whether there are any comments or opinions.

there is also a kind of eating goods. Everyone knows that they like all kinds of delicious food. They habitually and subconsciously want to share photos of food with their friends. They have no ideological constraints. They just want to share their lives or record their lives. Food is the most basic and closest theme to life, with the largest and most stable audience and the most diverse audience characteristics. In thousands of years of historical civilization, we have gradually formed a unique food culture.

because of their own needs, eating not only meets daily physiological needs, but also has become a special way for people to express and communicate their feelings. This is a daily social activity. People express their emotions, exchange information and adjust their psychology through eating activities. Diet is endowed with the function of emotional satisfaction.

a large number of food consumption scenes spread in social networks, and sensory feelings are transmitted and communicated with each other. Formal social media has spawned a new culture for modern people's conscious habits. Food has become the main communication object of social content, which has changed the topic structure of groups. The popularity of the word foodie is self-mockery by people with the help of food, which is essentially a new discourse system. People need food to show their identity, status, wealth and rights, which is usually a hidden and low-key show-off.