失衡理論是一般均衡理論的擴充，是硏究市場上失衡現象。它是類似於郗克斯的固芷價格 方法，認爲價格是偎固的，數最是伸縮性的，眞正的交易能在「錯誤的價格」發生。 凱因斯失衡理論，認爲勞動市場爲失衡發生的來源。凱因斯的非自願性失業，是因爲工資 向下價固、貨幣幻覺及期望缺口所形成。其恢復充分就業均衡的對策是貨幣政策與財政政策。凱因斯學派的學者，認爲失衡的原因，是流動性陷阱與投资不足，財政政策显唯一有效的 政策。虛胖失衡經濟的解決方案，必須同時活用經濟管理政策與非經濟管理政策，始能湊效。

The disequilibrium theory is an expansion of general equilibrium theory. It is used to research for the dise-quilibrium phenomenon in a market. It is similar to Hicks, Fix-Price Method considering the fixed-price flexible-quentity hypotheses transactions take place actually at the false trading prices. Keynes viewed the labor market as a disequilibrium — generating source. Keynes^ disequilibrium model of involuntary unemployment is due to the absence of wage rigid downward, money illusion, and the expectation gap. The unemployment disequilibrium could be eliminated by either monetary or fiscal policy. The Keynesians interpret unemployment disequilibrium as a special state taking place only when either a liquidity traps or insufficient investment prevails. Fiscal policy is found to be the more efficient and powerful in restoring full employment. Only economic policies can not eliminate a4 * illusory^ disequilibrium economy. We need non-economic policies as well as economic polices to reestablish full employment.