The invention relates to copper-tungsten corrosion-resistant enhanced austenitic stainless steel and a preparation method thereof. Alloy elements comprise smaller than or equal to 0.07 C, 8.0-10.0 Ni,17.0-19.0 Cr, smaller than or equal to 1.07 W, 0.2-0.8 Cu, smaller than or equal to 2.0 Mn, smaller than or equal to 1.0 Si, smaller than or equal to 0.035 P, smaller than or equal to 0.030 S, and the balance Fe, wherein 15.3x(C-0.01)<=W<=15.3xC. After alloy smelting, due to thermal deformation cogging and cold deformation, WC can be sufficiently broken and distributed in a dispersed manner, anddue to high temperature solid solution treatment, coarse and large austenite grains are obtained. Under the hydrogen introducing condition, the alloy corroding current in a 0.5 mol/L H2SO4 electrolytecontaining 5x10<-6>F<-> at 80 DEG C is 7.6-14.2 muA/cm<2>, compared with 304 stainless steel, the corroding speed is substantially lowered, and the mechanical performance is slightly superior to thatof the 304 stainless steel.