This paper is an attempt of looking hard at the violent nature of teacher existence. To do it, this paper focuses on corporal punishments which are the model of the violent nature of teacher existence. Problems of corporal punishments were discussed as right-wrong problem. But, it is nonsense because corporal punishments have already occurred. Therefore, we have to stop judging corporal punishments right or wrong, and expose the violent nature of teacher existence that producing corporal punishments. We cannot discuss about solutions of corporal punishments till it is attempted. This paper’s conclusion is following: 1) the essence of school that attempting to change students is violence and organizes the violent nature of teacher existence. 2) when teachers cannot control students, they use corporal punishments to restore their authority. 3) when teachers want to be good teacher and get some crisis, they use corporal punishments to protect themselves. 1) is never got rid of till we continue to carry on school education. 2) can be prevented with getting <authority> of teacher existence. <Authority> is a principle that students depend on teachers voluntary. 3) can be prevented by self-reflection of teachers. Teachers should think that“ why do I want to be a teacher” and“ what is educational destination that I want to go to”.