There are four reasons for the formation of food folklore: economy, (), () and religious belief.

Analysis: The reasons for the formation of food folklore are:

One is economic reasons.

Although dietary folklore is a cultural phenomenon, its gestation and variation will undoubtedly be restricted by the development degree of social productive forces and the layout of agricultural productive forces.

The second is the reason of natural conditions.

Natural geographical conditions are the material conditions for human survival and development, and dietary folklore has strong selectivity and adaptability to natural conditions. China has a vast territory, complex natural environment, and great differences in topography, climate, hydrology, soil and biology. Different geographical and climatic conditions have different eating habits and tastes.

The third is the national reason.

China is a multi-ethnic country composed of 56 ethnic groups. Due to the different natural and social conditions of different ethnic groups, people have formed their own unique traditional diet folk custom which is different from other ethnic groups through generations' inheritance and variation in long-term production and life practice.

The fourth is the reason of religious belief.

Many food customs have evolved from primitive belief worship and some people's religious ceremonies.