樂府，本是審音度曲的官署，采文人之作或氏間歌謠被諸管絃，運用於祭托、宴饗等場合，也可用來觀風俗、知氏情，作為施政的參考。貞節指堅貞的節操，是不論男女都應其備的品德，戰國至秦漢時期為端正風氣，於是朝野均提出主張，倡導男女各盡其分。婦女應其備的特質為溫婉柔順，言行須合乎禮法，為人妻者宜適時的規誅丈夫，將其導向正途，從一而終，終身不改。樂府氏歌大體上頗能反映這些特質，也如秦刻石所言，要求雙方同樣對感情堅貞:期盼與相愛的人白頭偕老，痛惡意志不堅的負心;羹，倘若遭逢情變，多毅然決定分手，不再留戀。然而不事二夫的觀念於漢樂府中未見，就文獻觀察，當時無論貴族或平氏再嫁的情形依然多見，可證漢代仍屬理論階段，並沒有其體實踐，至宋代方轉為實際。

Yue-Fu， originally is official bureau name， and the poetry collected by Yue-Fu， is Yue-Fu poetry. Yue-Fu poetry the part adapt from folks and be good enough to reflect customs the people live and feel. The chastity points faithful honor and fight a country to Qin、Han period is regular custom， hence the government and people all put forth assertion and initiate men and women each exert it cent. Women should the proper way adhering strictly to is faithful， obey rites， and advice husband， the folk song can reflect these characteristics rather， only the idea of "don't remarry" in didn't concretely carry out at that time， the situation remarrying still keeps.