并购是企业扩大规模、增强竞争实力的重要手段，如果企业完全出于市场行为，并购的目的就是通过并购产生的协同效应实现财富与价值的增加。所谓协同效应就是通常所说的1＋1）2效应，即并购后企业生产经营活动的总体效益大于并购前两个独立企业的效应之和。对于并购的企业来说， M & A is an important means for enterprises to expand their scale and enhance their competitiveness. If the enterprises are completely out of market behavior, the purpose of M & A is to increase the wealth and value through the synergies brought about by M & A. The so-called synergistic effect is commonly referred to as the 1 + 1) 2 effect, that is, the overall benefit of the post-merger manufacturing and operation activities is greater than the sum of the effects of the two independent enterprises before the merger. For mergers and acquisitions of enterprises,