Child maintenance is a family law institute based on the principle of family solidarity and the aim of this institute is to enable the child to grow undisturbed in accordance with his age, maturity, needs and interests. It enters the frame of parental care when it comes to a minor child and in such a case it implies that anyone who carries out parental care over a child has the duty to support the child. As a basis for building personality of every individual, a family appears. The family defines him and prepares him for an independent life and therefore has an extremely important role in our lives. One of the child's fundamental rights is the right to be supported by his parents. Parents are obliged to support their own child until the child's full age is reached, but also after the child's full age, if he or she is unable to secure financial independence for himself. In such situations, the pressure is on the parents. The problem arises when parents refuse to support the child and thus deny the material resources necessary for his development, education and existence. For this reason, the Croatian legislator foresaw the solutions to these problems within the Family Law.