Using the CW laser absorption and fluorescence method,the cross sections for the fine structure mixing and quenching of the Cs(6P)state,induced by collision with Ne atoms,were measured. Cesium atoms were optically excited to the 6P_3/2 state. The excited atom density and spatial distribution were mapped by monitoring the absorption of a counterpropagating single mode laser beam,tuned to the 6P_J →8S_1/2 transitions. The effective radiative rates were calculated for the 6P_J → 6S transitions. The fluorescence intensity I₈₉₅ of the sensitized 6P_1/2 →6S_1/2 emission was measured as a function of Ne density in the range 0.5 × 10¹⁸ ＜ N ＜4 × 10¹⁸ cm^－3 at constant temperature T=337 K. It was found that the quantity N/I₈₉₅ exhibited a parabolic dependence on N,confirming that the quenching of the 6PJ states is due to collision with Ne atoms,not with Cs ground state atoms. The. coefficients of the second-order polynomial fitted through the measured data yielded the cross sections σ₂₁ =(1.90± 0.82)x 10^-19 cm² and σ_D =(8.97±3.85)× 10^－19 cm² for the 6P_J fine-structure mixing and quenching,respectively,due to collision with Ne atoms.