  A brief review of the recently developed model for the QCD analytic invariant
charge is presented. The main idea of this approach is invoking the analyticity
condition into the framework of the renormalization group method. More
precisely, the analyticity requirement is explicitly imposed on the
perturbative expansion of the $\beta$ function for restoring its correct
analytic properties. The model possesses a number of profitable features.
Namely, the analytic invariant charge has no unphysical peculiarities at any
loop level; it contains no free parameters; it incorporates ultraviolet
asymptotic freedom with infrared enhancement; it has universal behavior both in
ultraviolet and infrared regions at any loop level; it possesses a good higher
loop and scheme stability. There is considerable difference between the
respective values of analytic invariant charge in the low-energy domain of
spacelike and timelike regions. The approach proposed enables one to describe
various strong interaction processes both of perturbative and intrinsically
non-perturbative nature.
