Because "government procurement" generally refers to "public procurement", as opposed to "private procurement". Judging from the reality of purchasing expenditure management in China's reform and opening up for more than 20 years, it is mainly decentralized procurement, which is inefficient and has many problems. In this way, financial expenditure management can be objectively divided into decentralized procurement and centralized procurement. Therefore, the reform of government procurement system in China should be clearly defined as "centralized government procurement".

Second, government procurement is the product of government intervention in the market. From the historical investigation of government procurement, we can find that although it originated from the free market economy, it was finally established under the market economy condition of government intervention. The mature government procurement system has become a means for the government to intervene in the economy and a means for the state to carry out macro-control on economic life. Under the condition of market economy, the government is the largest single buyer in the market. In developed countries, the proportion of government procurement in GDP exceeds 15%, and it will increase with the increase of state intervention and economic strength. Therefore, the government regulates a country's economic development by controlling the direction, quantity and structure of procurement.

Three, the establishment of government procurement system is the requirement of world economic integration. The original intention of establishing government procurement system is to optimize financial expenditure. With the formation and development of world economic integration, the government procurement system has extended to the field of international trade, and opening the government procurement market has become an important aspect of trade liberalization negotiations. In order to survive and develop, enterprises must enter the world market and the government procurement market of other countries. Because the opening of government procurement market is mutual, it forces countries to establish government procurement system in line with international practice. How to establish a standardized government procurement system has become one of the important topics after China joined w to.