  We rewrite the action for $QCD_2$ in the light cone gauge only in terms of a
bilocal mesonic field. In this formalism the $1/N$ expansion can be done in a
straightforward way by a saddle point technique that determines the master
field to be identified with the vacuum expectation value of the bilocal field.
Finally we show that the equation of motion for the fluctuations around the
master field is identical with the 't Hooft meson equation.
