寡头垄断(Oligopoly),又称寡头、寡占,是一种由少数卖方(寡头)主导市场的市场状态。寡头垄断是同时包含垄断因素和竞争因素而更接近于完全垄断的一种市场结构。它的显著特点是少数几家厂商垄断了某一行业的市场,这些厂商的产量占全行业总产量中很高的比例,从而控制着该行业的产品供给,寡头垄断又称为双占 Oligopoly, also known as oligopoly, oligopoly, is a state of the market dominated by a small number of sellers (oligarchs). Oligopoly is a market structure that is closer to a complete monopoly that contains both monopoly and competitive factors. Its notable feature is that a few manufacturers monopolize the market of a certain industry. The output of these manufacturers accounts for a very high proportion of the total output of the industry, so as to control the supply of products in the industry. The oligopoly is also called double occupancy