  The theory of higher derivative gravity is proposed to solve the
non-renormalizable problem in quantum gravity.In this article, We use two
numerical methods to fit another static spherically symmetric black hole
besides the Schwarzschild black hole.We obtain approximate expressions for two
numerical solutions, both of which contain a parameter that deviates from the
Schwarzschild degree.We also analyze their degree of precision and the
quasi-normal modes of the black hole.
