Two laser systems that can be used in coherent manipulation of the ground states of cesium (Cs) atoms with the frequency difference of 9.2 GHz are studied. The advantages and disadvantages of two laser systems are analyzed. The frequency difference of the two lasers is approved by saturated absorption spectroscopy or Fabry-Perot cavity, and the relative frequency stabilization of coherent laser beams is also analyzed by the beat-note signal. Using the temperature controlled etalon with free spectral range of 18.4 GHz, the laser can be locked to about 10 GHz negative detuning from the D2 transmission line of cesium atoms, which realizes a large frequency difference lock of phase coherent light. The single cesium atom trapped in the magneto-optcial trap (MOT) and the far-off-resonance optcial dipole trap (FORT) is already prepared and dectected in the hyperfine states experimentally. Raman laser system can be applied to the single atom to realize the coherent manipulation of the ground state of single cesium atom.