Every people wants their marriage happy, and get long lasting relationship. They wants their couple always love, care, and be faithfull man. But it may be not everlasting. Marriagae Indonesian principle actually is monogamy. Althought polygamy is able to do in Indonesia. But in real, there are many people espessialy male PNS (government labour). They get poligamy marriage with unregistered marriage. In this thesis research writer with normatif's judicial formally that did by analyzes library material or secondary data over and above see society case. According to Islamic Law,whatever from and marriage model ; along have accomplished on good terms and its requisite therefore that marriage is reputed temporary legitimate terminological Indonesia conjugal rights besides religions terminological validity and its trust, a marriage has legal power if on record base legislation regulation which is at KUA divides Moslem and KCS divides non Moslem Marriage bad impact siri constitusi effect of grasp that don't comprehensive to marriage and frail law its envorcement sentences to protect victims. Obiviously govermment shortly amends all conjugal rights product be adjusted with rill's condution society that protects all faction and behalf.