This thesis will analyse the legal term "parents support" which you can find in § 234 ABGB. The introduction will explain the familial duty of disclosure which is not exhausted by the parents? responsibilities for their children, e.g. their support and education. It also includes several rights parents and children have against each other.However, children have the obligation to support their parents if they are not able to care for their own self-preservation, if they did not neglect their own obligation to support their children in past, and if there does not exist any prior-ranking defaulter. Further, children only have to support their parents financially if their living conditions permit themselves appropriate subsistence and if they are able to cover their other obligations to support. The most important thing about "parents support" is the home or outpatient care of the parents? generation who is in need of care. The thesis? focal point is to give a good overview of this topic. As the legal norm is not very important in case-law or literature, the interpretation and analogy of § 234 ABGB facilitated the answering of the posed questions. When the facts of a case, concerning parents support, leave state territory of Austria, you have to use special international legal norms.The thesis also deals with the possibility of the welfare to subrogate against children in Styria, which illustrates an important and explosive topic. Therefore, the thesis discusses the complex of problems and analyses the importance of the law.