  By using the Taylor series method and the solution-generating method, we
construct exact black hole solutions with minimally coupled scalar field. We
find that the black hole solutions can have many hairs except for the physical
mass. These hairs come from the scalar potential. Unlike the mass, there is no
symmetry corresponding to these hairs, thus they are not conserved and one
cannot understand them as Noether charges. They arise as coupling constants.
Although there are many hairs, the black hole has only one horizon. The scalar
potential becomes negative for sufficient large $\phi$ (or in the vicinity of
black hole singularity). Therefore, the no-scalar-hair theorem does not apply
to our solutions since the latter does not obey the dominant energy condition.
Although the scalar potential becomes negative for sufficient large $\phi$, the
black holes are stable to both odd parity perturbations and scalar
perturbations. As for even parity perturbations, we find there remains
parameter space for the stability of the black holes. Finally, the black hole
thermodynamics are developed.
