1. Productivity and production speed can't keep up. Some traditional foods, such as some cakes, are not easy to be mechanized, and their own recipes are produced in their own workshops in order not to spread. When the business is too good, the productivity is easy to go down;

2. The publicity channels are backward. Some traditional food producers may have a certain age, and they don't use smart phones and various social platforms to promote them, nor do they specialize in advertising and marketing. Most of them are passed down by word of mouth from street corners.

3. The public's curiosity is getting stronger and stronger. Now with the internet, everyone can see a lot of new things without going out. Some novel and eccentric new foods enter the public's field of vision, and they will feel that traditional classic traditional food is too boring;

4. It is difficult to innovate. Traditional cuisines generally follow the explored production methods, and few traditional cuisines inheritors are willing to innovate and invent more new cuisines

I hope I can help you.