  In this paper, the Joule-Thomson (JT) adiabatic expansion is investigated for
generalized Ayon-Beato-Garcia (ABG) regular black hole. It has a magnetic
charge which makes central region of the black hole metric to be AdS spacetime
and so become non singular. Thus we not need to use an additional cosmological
parameter coming from ADS/CFT correspondence for production of pressure
coordinate in the black hole equation of state. Form this point of view our
work is a new approach versus to conventional methods which are addressed in
the references of this paper. However we will see important behavior of
parameters of this modified ABG black hole on possibility of being of JT
adiabatic expansion. This black hole is characterized by five parameters
including mass $m$, magnetic charge $q$, and three other parameters related to
form of used nonlinear electromagnetic interaction fields. Inversion points are
in fact a particular T-P curve at constant enthalpy and it separates cooling
and heating phase of the modified AdS ABG black hole.
