The word "physics" comes from the Greek word φ υ σ ι κ, which means nature. In ancient times, Europeans called physics "natural philosophy". In the broadest sense, it is the study of natural phenomena and laws. The word "physics" in Chinese and Japanese originated from Fang Yizhi's encyclopedia "Little Knowledge of Physics" in the late Ming and early Qing Dynasties. In the field of physics, study the basic elements of the universe: matter, energy, space, time and their interaction; By analyzing the basic laws and rules, we can fully understand this system. Physics is composed of the study of natural philosophy which is very similar to the classical times. It was not until19th century that physics was separated from philosophy and became an empirical science. Physics is closely related to many other natural sciences, such as mathematics, chemistry, biology and geography. Especially mathematics, chemistry and geography. Chemistry has a far-reaching relationship with some physical fields, such as quantum mechanics, thermodynamics and electromagnetism, while mathematics is the basic tool of physics, and geography needs physical mechanics, meteorology and heat. The word "physics" appears in Chinese, which is the abbreviation of "material-based reasoning", that is, to investigate the shape and change of things and summarize their laws. The knowledge of physics in China is recorded in early literature, such as Heavenly Creations. Japanese scholars pointed out: "It is particularly worth writing that China's Chinese translation works since modern times have become the basis for Japan's translation of western scientific vocabulary." Sang Mu or Xiong Xiong, a Japanese researcher in the history of early physics, said: "Physics was originally called poor science in China. During the Chongzhen period of the Ming Dynasty, there was a book called Little Knowledge of Physics, which covered astronomy, meteorology, medicine and so on. As early as the Song Dynasty, there was the same content in Historical Records, which were the origins of China's physics works. "Lv Kun in the Ming Dynasty (1536- 16 18) wrote" Groans ",in which the second part of the sixth volume is called" Physics ",which is generally related to physical science. In Song Dynasty, Zhu (1 130- 1200) and others often used the word "principle of things" or "physics". Li Zhengdao, a famous contemporary physicist, once quoted a poem from Du Fu's Two Poems of Qujiang in the Tang Dynasty, "If you push physics carefully, it will be romantic. Why use the name of" stumble "to explain that the word physics appeared in the prosperous Tang Dynasty [4]. In fact, in the "Han Dynasty-Sui and Tang Dynasties" part of the Outline of the History of China Philosophy compiled by the Institute of Philosophy of China Academy of Sciences and the Department of Philosophy of Peking University, it is recorded that Yang Quanzeng, a native of Wu, wrote a book on things during the Three Kingdoms period, which was a work to study and comment on astronomy, geography, technology, agriculture and medical knowledge at that time. There is a cloud in "Reading Ghost Training": "Happiness is in the sun, Ci Shi paints iron, and Kwai is in the sun. Although he is wise and capable, his eyes and ears are not enough to distinguish physics; The theory of mind and nature is not enough to decide right or wrong. China's ancient "physics" should mean everything.