In the custom of Double Ninth Festival, eating Double Ninth Festival cake is an essential item, because "cake" and "high" are homophonic, which means that the living standard is rising step by step and symbolizes the happiness and good luck of the family.

Chongyang Flower Cake has the effects of moistening intestine, invigorating spleen and stomach, harmonizing middle warmer and benefiting qi, moistening dryness and benefiting lung. Cornus officinalis is pungent, fragrant and warm, and can cure cold and drive away poison.

However, Chongyang cake, as a food with high carbohydrate and fat, is easy to cause excessive secretion of gastric juice and physical discomfort when eaten on an empty stomach. Flower cake is made of glutinous rice, which is difficult for the elderly to digest and should not be eaten more. People with poor gastrointestinal function can eat fermented Chongyang cake.

There is a folk saying that "drinking chrysanthemum wine on September 9 makes people * * * chrysanthemum drunk and double ninth". Miscellanies of Xijing: "On September 9th, Pei Cornu ate bait and drank chrysanthemum wine, which made people live longer."