Some interesting physical features of Brans-Dicke’s scalar ϕ are found in connection with the conformal scalar σ. First, by emphasizing the conformally Riemannian structure of Brans-Dicke’s field, it is shown that the main Brans-Dicke’s field equations are comparable with those derived from the conformal transformation of Einstein’s field equation, in which the two scalars ϕ and σ are found to play essentially the same role at the stage of field equations. Next, in order to obtain another new physical functions of ϕ, the spatial structure is extended to conformally non-Riemannian by introducing the torsion. By doing so, it is found that Brans-Dicke’s scalar ϕ also contributes to the torsion within the range of the Weyl-Dirac theory with torsion through the relation ϕ∼ exp ^-2σ]∼β2, β being Dirac’s conformal scalar.