  Adopting the strong field limit approach, we investigate the strong
gravitational lensing of a spherically symmetric spacetime in the
Einstein-Proca theory. With the strong field limit coefficient, three
observable quantities are obtained, which are the innermost relativistic image,
the deflection angle and the ratio of the flux. Comparing the observable value
and the theoretical value of the strong gravitational lensing, we can verify
the effectiveness of the strong gravitational lensing model.
