Praying for rain belongs to one of the praying techniques and is closely related to folk beliefs, witchcraft, religion, etc. Regardless of the factors that influence it, its cultural connotations share similarities, embodying the people’s desire for abundant harvests in the agricultural era for survival. Many historical documents have relevant records on praying for rain, and pre Tang novels present this in their own way: the main body of praying for rain is not limited by identity and ordinary people, officials and sorcerers can participate, but the main body is officials and sorcerers. The ritual of praying for rain is not limited to any particular format, and the spontaneous folk activities are relatively simple and casual. The procedures initiated by the government are strict and standardized, and are cumbersome and complex. The gods who pray include natural gods such as mountains, rivers, and trees, as well as mythological and legendary immortals and dragons. The depiction of the subject, ceremony, and deity of praying for rain in pre Tang novels reflects the true living conditions of people at that time, and has profound cultural implications.