An expression of politeness is greatly influenced by the personal relations; equality, social status, power and the relative degree of intimacy. In the relationship of equal people,「Ore(おれ)」uses words like「ore(おれ)」「boku(ぼく)」「kimi(きみ)」to「Yamaarasi(山嵐)」who is crude and friendly.「Ore」uses words like「anata(あなた)」and「o-nasai(おーなさい)」to「Uranari(うらなり)」who is admirable. 「o-nasai(おーなさい)」is an expression of politeness.「Ore」uses words like「kisama(きさま)」and impolite expressions to 「Noda(野だ)」who is a contemptible person 「Ore」uses ironic words to the landlord of his home.「Ore」feels a curio dealer rude. 「Ore」uses forms like「da style(だ体)」to him throughout this novel. But「Ore」uses forms like「desu・masu style(です・ます体)」to an old lady who is the new landlord.「Ore」shows close friendship to her. There was full of wit and humor in『Bottyan(坊っちゃん)』, Every character in the book has a nick name. Every character has a highly individualistic way of expressing politeness. There are「da style(だ体)」「desu・masu style(です・ます体)」「dearimasu style(であります体)」. There are also new expressions and old ones. New ones are「o-desu(おーです)」「o-ninaru(おーになる)」, old ones are「o-da(おーだ)」「o-nasaru(おーなさる)」「o-asobasu(おー遊ばす)」. I analyzed the polite expression in『Bottyan(坊っちゃん)』. I hope to compare and analyze contemporary literary works.