Civil law regulation of investments is associated with an increase in the role of capital investments in the processes of creating new technologies, implementing scientific and educational projects. There are two approaches to the civil legal regulation of investments: object and activity ones. Within the framework of the object approach, the essence of civil law regulation of investments is defined through the category "object of civil law". Within the framework of the activity approach, the essence of civil law regulation of investments is understood through a set of actions for the transfer of an object and through relations associated with the investment of assets. The purpose of the study is to substantiate the effectiveness of the integration of object and activity approaches to the civil legal regulation of investments in the scientific and educational ecosystem of the university. The methodological basis of the study was formed by general and special methods of cognition, which made it possible to give an adequate assessment of the concepts, to determine the essence of civil legal regulation of investments and the scientific and educational ecosystem of the university. The main results of the study are the following: to clarify the content of the scientific and educational ecosystem of the university; to establish dialectical relationships between the civil law regulation of investments and sustainable development of the scientific and educational ecosystem of the university; to describe the civil law regulation of investments in the scientific and educational ecosystem of the university. In the content of the scientific and educational ecosystem, network, participatory, integrative components are highlighted that generate processes of selforganization and self-development, stimulate the commercialization of innovations, help to minimize risks, focus on improving the quality of life of each person, sustainable development of society. The dialectical interrelationships between the civil legal regulation of investments and the sustainable development of the scientific and educational ecosystem provide support for innovative solutions in the field of end-to-end technologies, the organization of digital platforms and new infrastructure facilities for the training of scientific personnel and specialists with professional skills of the 21st century. A comprehensive characteristic of civil law regulation of investments, which includes legal incentives for investment activities, state support for investors, legal restrictions and prohibitions, state control and supervision, provides an increase in the efficiency of forms and methods of public-private partnership in the process of development, examination, implementation of investment projects in the field science and education. The integration of object and activity approaches to the civil legal regulation of investments in the scientific and educational ecosystem of the university focuses on the improvement of intersectoral harmonization of regulatory and legal ...