浮力平流直接影响着海洋内部的湍流混合过程，制约着海洋热盐结构的形成和变化。这一过程在浅海，尤其在象渤黄海那样具有较强浮力平流的中国大陆沿岸带海区，是十分重要的。本文主要讨论浅海浮力平流对温跃层和海洋锋的影响，从理论上导出在浮力平流效应作用下期混合锋的公式，并以南黄海为例进行了计算，计算结果是令人满意的。 The buoyancy advection directly affects the turbulent mixing process inside the ocean and restricts the formation and change of ocean thermohaline structure. This process is very important in the shallow sea, especially in the coastal zone of mainland China that has strong buoyancy advection like the Bohai Sea. This paper mainly discusses the influence of shallow buoyancy advection on the thermocline and ocean front, and deduces the formula of the next-generation mixing front under the effect of buoyancy advection theoretically. Taking the South Yellow Sea as an example, the calculation results are satisfactory.