1. Enterprise investment in a broad sense refers to all funds used within the enterprise and foreign investment. Foreign investment refers to an enterprise's investment in other units in the form of cash, physical objects, intangible assets or the purchase of securities such as stocks and bonds.

2. Enterprise investment in a narrow sense only refers to foreign investment. The inward investment of an enterprise refers to the investment of putting funds into the enterprise and purchasing various assets for production and operation.

3. Theoretically speaking, the risk of domestic investment is lower than that of foreign investment, and the income of foreign investment should be higher than that of domestic investment. With the development of market economy, there are more and more opportunities for enterprises to invest abroad.

Narrow investment: directly linked to currency, such as stocks, funds, futures, warrants and other currency-related investments.

Investment in a broad sense: not necessarily directly linked to money, but still indirect, such as cultivating children to study, buying books for themselves and improving their own quality.