  We have calculated one-loop amplitudes for the production of Higgs boson in
association with two electroweak bosons ($H,\gamma,Z$) via gluon-gluon fusion.
We present preliminary results for the total cross section at 8, 13 and 100 TeV
center-of-mass energies at $pp$ colliders. We study the interference effect
and, also comment on the effect of new physics in terms of anomalous couplings
of the Higgs boson in these processes.
