The subject of research in the article is the category of economic solidarity and its constitutional and legal content. The plurality of understanding of economic solidarity in modern science and current legislation is stated, among which is the understanding of economic solidarity as: a constitutional principle; constitutional value; factor of evolution of human and civil rights and freedoms in the economic sphere; manifestations of the principles of constitutionalism; constitutional basis for development of economic diversity, competition, differentiation of economic statuses; forms of communication, forms of interaction between participants in public relations; vectors of economic and social interaction; the plane of intersection of economic interests of individual, public authorities, business, social institutions and other participants in economic relations; criterion of the level of development, maturity of economic interaction, criterion of sustainable economic development; properties, qualitative characteristics of economic interaction at a certain stage of socio-economic development; criteria for effectiveness of public administration in the economic sphere; an indicator of dependence or connectedness of participants in economic and social interaction; a systemic, complex institution of a constitutional, economic, axiological and organizational and managerial nature. The understanding of economic solidarity as a constitutional principle and constitutional value for Russia is relatively new and requires doctrinal understanding. The article highlights theoretical approaches to the positioning of economic solidarity (in the constitutional and other dimensions); the conclusion is made about the leading role of the state in preserving and ensuring economic solidarity in society; the prospects for the use of interdisciplinary approaches to the study of economic solidarity are outlined.