Nowadays, in whatever economic types, the capital always plays an extremely important role. It is not only important in day-by-day needs but also in many aspects of the real life. With business organizations, they need capital to buy or lease real estate for placing the factory, the office, the inventory goods…; to purchase materials for producing merchandise; to distribute the merchandise from producers to consumers, to pay for employees, etc. So how they can obtain the needed capital for their business? There are many ways to raise capital such as: mortgage assets, borrowing from the financial institutions or banks, issuing stocks or bonds, etc. With government, they need capital to do the government projects, to do profit or non-profit activities, etc. So how they can do it? Increasing any types of taxes? Increasing the price of products which are under the management of the government? Borrowing from other countries? Selling the real materials abroad with the low price? Issuing stocks or bonds? etc. With many people who have free-cash and want to use it usefully without doing business, how they can do with their money? Lending? Saving in banks? Buying stocks or bonds? etc. They have many ways to choose. They can find the best way which is suitable for their own situation. However, there are many organizations choose issuing bonds, and many people choose buying bonds instead of stocks. Why they choose this way? How they can do it? What are the bonds? Today, we will introduce about BONDS, a way to raise capital for business organization, for government and to invest carefully for the investors.