  In this article we study a constant-roll inflationary model in the context of
the DGP brane-world cosmology caused by a quintessence scalar field. We
determine an analytical solution for the Friedman equation coupled to the
equation of motion of the scaler field. The evolution of the primordial scalar
and tensor perturbations is also studied. To check the viability of the model
we use numerical approaches and plot some figures. Our results for the scalar
spectral index and the tensor to scaler ratio show good consistency with
observations for given values of model parameters.
