  We establish PBW type bases for $\imath$quantum groups of arbitrary finite
type, using the relative braid group symmetries. Explicit formulas for root
vectors are provided for $\imath$quantum groups of each rank 1 type. We show
that our PBW type bases give rise to integral bases for the modified
$\imath$quantum groups. The leading terms of our bases can be identified with
the usual PBW bases in the theory of quantum groups.
