The aim of this article is to present the concept of intergenerational education in Germany in the context of the solidarity idea. As challenge for intergenerational education the authoress describes the demographic change in Germany and their consequences for intergenerational relationships. So one of the main aims of the intergenerational education is to build positive relationships between different generations. The intergenerational relationships are describes in the article both in the micro dimension (family) and in the macro dimension (society). Then the authoress presents the idea of solidarity, which is the base of the intergenerational education concept. In conclusion she underlines, that for intergenerational relationships is ambivalence typical and the building of positive relations between generations requires to manage with ambivalence. Solidarity can be an effect of constructive managing with ambivalence in intergenerational relations.