The culture of castration gets to be thriving and prosperous with agriculture civilization, and to give the meaning "castration" to the word "qushi". Referring the "qushi" to the animals, there are three functions: domestication, making the meat fat and delicious and trade monopoly. However, the "qushi" on human obviously indicates the feudal monarchy consolidating the concentrated expression of imperial power, and also the function of domestication. From the ancient times to present, there are so many words can be used to express the meaning of "qushi", and the work to search and collect these words is such significant to explore the culture of castration and agriculture civilization and is of great value for the interpretation of ancient words.