The first purpose of this paper is to study contact CR submanifolds of Sasakian manifolds and investigate some properties concernig with ${phi}$-holomorphic bisectional curvature. The second purpose is to show an existence theorem of mixed foliate proper contact CR submanifolds in the standard Sasakian space form $E^{2m+1}$(-3) with constant ${phi}$-sectional curvature -3.