The definition of family as a valuable concept in Turkish society includes not only mother, father and child, but grandfather, grandmoth er, siblings and their children. Unity of family is very important for Turkish culture. The concept of family can be defined as a small kinship by blood. The assistance alimony is paid to the certain persons in rela tives by blood. The provision of assistance alimony includes the persons other than parents and children. Assistance alimony is regulated for the lineal kinship and siblings by Articles 364 to 366 of the Turkish Civil Code. A person who is living in financial comfort is obliged to pay assis tance alimony to their lineal relatives and siblings who may suffer hard ship without such a support. Duty of Assistance is regulated under Arti cle 328 ff of Swiss Civil Code. It can be stated that the regulation in the Turkish Civil Code is similar to the Swiss Civil Code. Assistance alimo ny is an important duty of persons living in financial comfort to provide protection and maintenance for relatives. Creditor and debtor of assis tance alimony shall apply to the court for legal actions about this issue. Assistance alimony can be requested according to rules about the order of inheritance law. In this study, application, conditions and result of the assistance alimony will be evaluated in the light of the Republic of Tur key Court of Cassation decisions. Conditions which are required quest assistance alimony will be examined and comparison between the court decisions about this issue will be made.