Public investments not only contribute to the formation of an individual, but bring benefits for whole society with advantages that can be extend for a longer duration and with greater effect on quality of life. At present, most governments face the problem of finding budgetary resources available to finance public investments. Like many other countries in the world, Republic of Moldova require the considerable needs in public investments, while preserving fiscal sustainability. In approach of this article was tried to reflect the role of public investments for society.