Temple fairs, also known as "temple markets", are a kind of folk belief activities held regularly in temples and their vicinity, popular throughout the country. Some large-scale temple fairs were already of considerable scale in the Tang Dynasty, and they are still passed down and have a wide influence. Various temple fairs have their own stipulated dates, most of which are traditional lunar festivals or religious and folk belief anniversaries. Temple fairs are characterized by centralization, group nature, and fixedness. During the temple fairs, various folk activities and technical trade activities can be fully displayed in public, and the activities are rich and colorful. Welcoming gods and competitions are also a form of temple fairs. In the Hong Kong and Macao Special Administrative Regions of my country, as well as Taiwan, the traditional temple fairs that are popular among believers are all introduced from the mainland and have an inseparable connection with the mother body. In overseas Chinese residential areas, many temple fairs brought from the motherland are very popular, and they inherit the cultural bloodline of the Chinese nation in a special way. The Dongyue Temple Fair is one of the earliest temple fairs in Beijing's history. It appeared in its prototype in the Yuan Dynasty, was formally formed in the Ming Dynasty, and reached its peak after entering the Qing Dynasty. The temple fair is based on the Dongyue Temple in Beijing, and gradually formed a series of group activities including faith, trade, entertainment and other aspects. In history, the Dongyue Temple Fair was mainly held during the Spring Festival, the birthday of Dongyue Emperor from March 15 to March 28 of the lunar calendar, and the first and fifteenth days of each month. During the temple fair, people went to the temple to worship Dongyue Emperor and folk auspicious gods to pray for blessings and good fortune. Folk incense associations from all over the country do good deeds and help good deeds, and various industries also take this opportunity to hold activities. In addition, there is a large-scale temple market, selling seasonal supplies, local specialties, local snacks and daily necessities. Today, the Dongyue Temple Fair is mainly held during the Spring Festival. On the basis of inheriting traditional customs, it has added activities such as exhibitions and lectures, making the Dongyue Temple Fair one of the typical representatives of cultural temple fairs in the new era. The Beijing Dongyue Temple Fair takes the belief in Dongyue Emperor as its core and the blessing culture as its important content, reflecting a broad mass nature and conducive to the creation of a harmonious social atmosphere. The Dongyue Temple Fair embodies many traditional folk customs and provides important materials for studying folk customs in North China. After 1949, the Dongyue Temple Fair in Beijing fell into silence because the temple site was occupied by government agencies. At the end of the 20th century, the temple fair was restored and has continued to this day, becoming one of the most influential festivals in Beijing.