摘要:我国的婚姻法总则中第四条有了体现婚姻法立法宗旨的规定：“夫妻应相互忠实，互相尊重；家庭成员应当敬老爱幼，相互帮助。”将夫妻之间的忠实义务这一社会与道义融入到法条之中，在婚姻自由与道德自律之间更推崇以理固法，由此来推进婚姻法律制度的健全发展。此原则是夫妻间婚姻关系稳固的基石，是对婚姻家庭关系内容的浓缩。

　　　我国关于夫妻忠实义务的规定，目前还没有很明确规定何为夫妻忠实义务，只是道出了夫妻应该相互忠实，因而要想改善婚姻伦理关系，更好地尊重我国的一夫一妻制度，保护夫妻之间的利益，以便利于子女更加健康的成长，首先要明确夫妻忠实义务在法律上的界定，其次要了解其法律属性，进而知晓它在我国立法中的缺陷所在，最后找到完善的方法，包括借鉴国外的规定，明确违背夫妻忠实义务的规定的构成要件和明确违背夫妻忠实义务的一方应当承担的相应责任。

关键词：婚姻法;一夫一妻;夫妻忠实义务

Abstract:Marriage law of our country has been reflected in general provisions of article fourth of marriage law legislative purpose provision:" husband and wife should be loyal to each other, mutually respect each other; family members shall respect the old and love the young, help each other." The social and moral into law, the freedom of marriage and moral self esteem between Daniel solid method, thus to promote the sound development of the legal system of marriage. This principle is husband and wife marital relations firm cornerstone, is the marriage and family relationship content concentration.

　　　  Our country about the faithful duty of husband and wife, there is no clear provisions of what is the faithful duty of husband and wife, just a couple should be loyal to each other, thus to improve the ethics of marriage relationship, better respect our monogamy, protects the interests between husband and wife, so conducive to children's healthy growing up, we should first clear duty legally defined, we must know its legal attribute, and then know it in the legislation of our country 's limitation, finally found the perfect method, including foreign regulations, clear violate faithful duty of husband and wife specified elements and clearly violates the faithful duty of husband and wife. Shall bear the corresponding liability.

Key Words：Marriage law;monogamy;faithful duty of husband and wife