根据商品价格弹性理论,“薄利多销”、“高价限销”是微观价格决策中增加总收益的两种常见方法。但是,商品降价(或提价)的具体界限在实践中却很难把握,增加了生产者经营管理的难度。为此,本文提出商品价格变动的最优化数量界限,以增强经济学理论的应用性。 According to the theory of commodity price elasticity, “puerile” and “high-priced limit sales” are two common ways to increase total profit in micro-price decision. However, the specific boundary between the price reduction (or price increase) of commodities is difficult to grasp in practice, which increases the difficulty of producer management. For this reason, this article puts forward the limit of the optimal quantity of the change of commodity prices so as to enhance the applicability of economic theory.