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The entanglement of the coupled massive scalar field in the spacetime of aGarfinkle-Horowitz-Strominger(GHS) dilaton black hole has been investigated. Itis found that the entanglement does not depend on the mass of the particle andthe coupling between the scalar field and the gravitational field, but itdecreases as the dilaton parameter $D$ increases. It is interesting to notethat in the limit of $D\to M$, corresponding to the case of an extreme blackhole, the state has no longer distillable entanglement for any state parameter$\alpha$, but the mutual information equals to a nonvanishing minimum value,which indicates that the total correlations consist of classical correlationsplus bound entanglement in this limit.

Entanglement of coupled massive scalar field in background of dilaton black hole