Recently, higher discussions are made up on the culture of mathematics classrooms. These discussions are mostly about desirable culture and reform of culture in mathematics education. This paper is to offer a view point of seeing the culture of mathematics classroom. We need to look straightly our classroom as well as to reform the culture of mathematice classroom. This paper recommend sociomathematical norms to analyze and reform classroom culture. A elementary mathematics classroom was analyzed to understand our own culture of mathematics classroom.