The Eight Banners of the Qing Dynasty once had brilliant achievements, but they were eventually eliminated by history. The main reason is that the management of the Eight Banners was not strict in the later period, which made the Eight Banners more and more corrupt, and their combat effectiveness plummeted, and eventually they were eliminated by history.

The first is the system of the Eight Banners Army. The most fundamental problem of the Eight Banners system is hereditary system. Although the hereditary system was very effective in the early days of the founding of the army, it was precisely because of this second generation of officials who were born with official titles and had no worries that the Eight Banners army became more and more general and became the root of corruption. These children soldiers of the Eight Banners, who started with military exploits, have been handed down from generation to generation. They have long lost the courage of their ancestors and are immersed in the fun of government children. They do nothing but idle around, shoot birds and walk around every day. By the end of the Qing Dynasty, the Eight Banners' baby soldiers were a group of cowards with no ambition.

Second, generous treatment completed the fall of the children and soldiers of the Eight Banners. The wages of the children of the Eight Banners in the Qing Dynasty were very generous. After the Qing army entered the customs, in order to reward their children, the Qing army snatched the land from the Han people and carved it up. In order to maintain military discipline, the strategy of raising soldiers with high salaries was adopted. However, such treatment is extremely counterproductive, so that the development of these Eight Banners for future generations will become mixed with rich treatment and die out.

Thirdly, the marriage policy of Manchu is strict, and only intermarriage is allowed, but the result of consanguineous marriage is even worse. The consanguineous marriage of the Eight Banners led to the deterioration of the physical quality of the children and descendants of the soldiers of the Eight Banners. For example, the last emperor of Manchu royal family married so many wives and had few children, which was determined by genes. The evil consequences brought by the system of consanguineous marriage are the greatest punishment for the rulers of the Qing Dynasty.