Eating zongzi on Dragon Boat Festival is to drive away dragons to commemorate Qu Yuan, and eating salted duck eggs is because Dragon Boat Festival indicates the arrival of hot summer. At this time, the climate is very humid, which is particularly easy to breed bacteria and cause diseases such as plague and sores. The shape of duck eggs is more like a heart, so people in ancient times thought that eating salted duck eggs can protect their spirits from damage.

Among the traditional festivals, the variety and complexity of folk customs, or only the Dragon Boat Festival can be compared with the Spring Festival, all have the themes of rituals and customs such as praying for blessings and eliminating disasters, which places people's desire to welcome auspicious blessings and ward off evil spirits and eliminate disasters. The customs of the Dragon Boat Festival mainly include picking dragon boats, dragon festival, picking herbs, hanging wormwood and calamus, worshipping ancestors, washing herbal water, drinking water at noon, soaking dragon boats in water, eating zongzi, flying kites, tying colorful silk thread, fumigating Atractylodes lancea, wearing sachets and so on. Dragon boat boating is very popular in the southern coastal area of China, and it has been deeply loved by people of all countries and formed an international competition since it spread abroad. The custom of eating zongzi on the Dragon Boat Festival has been popular all over China since ancient times, and has become one of the most influential and extensive folk food customs of the Chinese nation.