  In this article we have calculated the structure properties of a strange
quark star in static model in the presence of a strong magnetic field using MIT
bag model with a density dependent bag constant. To parameterize the density
dependence of bag constant, we have used our results for the lowest order
constrained variational calculation of the asymmetric nuclear matter. By
calculating the equation of state of strange quark matter, we have shown that
the pressure of this system increases by increasing both density and magnetic
field. Finally, we have investigated the effect of density dependence of bag
constant on the structure properties of strange quark star.
