Let (M,0T″) be a compact strongly pseudo convex CR structure with dimRM=2n−1. Then, in [Michigan Math. J. 50 (2002) 517–549], the construction of the versal family of CR structures is settled. The purpose of this paper is to introduce a canonical Kaehler metric for the parameter space of this versal family if the CR structure admits a normal vector field and a non-vanishing CR n-form with the condition and where Z1 is introduced in [Compositio Math. 85 (1993) 57–85].