Abstract:The physiological basis for story is the development of the human brain, and the development and changes of the human brain are inevitable results of human labor. The behavioral basis for story is the emergence of language, driven by the practical need for information exchange. The thinking basis for story is imagination, which relies on the richness of language and the vividness of thinking. Continuous labor, abundant language, and imaginative thinking collectively propel the creation and development of stories. The emergence of stories completed the differentiation of the human race from animals and constituted the essential human attributes. The development of stories contributed to the formation of human culture and civilization. Labor, evolution in human brain, formation of language, and imaginative thinking are the internal foundations of the origins of stories. Sound, symbols, thinking, imagination, and fiction are the historical cause of the development of stories. Through labor, humans have achieved evolution from animals to humans, and stories have become an important distinction between humans and animals due to their nature of fictionality.