The base space of the universal unfolding of isolated hypersurface singularities can be equipped with a geometry structure

which was atomizated by Hertling as CVstructures.Hertling also proved that this structure is compatible with the canonical Frobenius manifold on the base space and gave CDVstructure. Given any CDVstructure M

there are two natural flat meromorphic connections  and  on the pullback bundles of the complex tangent bundle H:=π*T

(1

0)

M



where π:?times;M→M，and the singularities of these two connections are subvarieties{0

∞}×M.If M is a semisimple Frobenius manifold

it is known that these two meromorphic connections have irregular singularities. It is concluded that there exists a formal isomorphism between these two formalized bundles with connections by applying the classifications of irregular flat meromorphic connections. A constructional proof of the formal isomorphism is given.