Electronic nematic phase in iron-pnictide superconductors have been discovered in various systems by techniques such as resistivity, ARPES, magnetic torque and neutron scattering. In this state, the electronic properties such as resistivity, spin excitation show anisotropy between (1 0) and (0 1) direction, even when the system is still in tetragonal phase. Our recent research of low energy spin excitations in detwinned BaFe2As2 shows nematic spin correlations persist to the tetragonal state, but it is unclear what happens at high energies.Given that the high energy spin waves in detwinned BaFe2As2 display two-fold rotational symmetry in our recent experiment on MERLIN, it is interesting to explore whether nematic fluctuations above Neel temperature will induce any nematicity in the high energy spin excitations dominated by superexchange coupling J between localized spins.