  The time delay between two relativistic images in the strong gravitational
lensing governed by Gauss-Bonnet gravity is studied. We derive and calculate
the expression of time delay due to the Gauss-Bonnet coupling. It is shown that
the time delay for two images with larger space each other is longer. We also
find that the ratio of Gauss-Bonnet coefficient and the mass of gravitational
source changes in the region like $\frac{\alpha}{M}\in[0,2)$. The time delay is
divergent with $\frac{\alpha}{M}\longrightarrow 2$.
