微觀經濟學，有時被稱為價格理論，係現代經濟學嘅一個分支，研究經濟體系中最基本單元（個體、企業）嘅經濟行爲。微觀經濟學重視需求與供給，如何影響個人，達成交易，並形成市場中嘅均衡價格。另外，自從愛德華·張伯倫和瓊·羅賓遜發展嘅市場結構理論、一般廠商嘅生產決策、進行消費決策嘅消費者行爲等亦跟傳統嘅供給需求理論，綜合成微觀經濟學嘅核心課題。微觀經濟學關注人們嘅決定同行爲影響物品同服務嘅供給同需求、誰負責決定價格、或者反過來，價格點樣決定物品同服務嘅供給量同需求量。
Microeconomics, sometimes referred to as price theory, is a branch of modern economics that studies the economic behavior of the most basic unit of an economic system (individuals, firms). Microeconomics focuses on demand and supply, how they affect individuals, make deals, and form equilibrium prices in the market. In addition, the theory of market structure, production decisions of general manufacturers, and consumer behavior for consumption decisions, developed by Edward· Chamberlain, Joan, and Robinson, have also been integrated into the core topics ·of microeconomics with the traditional theory of supply and demand. Microeconomics is concerned with how people's decisions and behaviors affect the supply and demand of goods and services, who is responsible for determining prices, or conversely, how prices determine the supply and demand for goods and services.