The article holds that the problem of the relationship between"words"and"meaning"has always been the philosophical proposition.Through analyzing the relationship between"words"and"meaning"and probing into"disoourse","text"and"space-time history",the author thinks that the interpreters’preconceptions,preexistence,pre-structure and different perspectives have resulted in diverse forms of interpretations,and the being of each kind of form has its own rationality.Moreover,the process in which the interpreters interpret"words","discourse","text"and"history"is also the process to interpret themselves.Nevertheless,being able to say and being unable to say are soaked in the whole process of interpretation,and,as a result,human beings will always be confronted with a kind of"say and cannot say"embarrassment.