This shows that the earnings ratio is unstable, and the factors that lead to instability in the main role of taxation and inflation, changes in economy and equity risk premium and other aspects.

• 由此可见，市盈率也是不稳定的，而导致其不稳定的因素主要有税收和通货膨胀的作用、经济构成的变化和股权风险溢价等几个方面。