This paper described a dye laser with zig zag cavity pumped symmetrically from two sides by 308 nm XeCl excimer laser.Improvment of the output beam was investigated and the experiments show that the quality of the output beam by using symmetrical pump from two sides is better than that by using ordinarily transversal pump. For dye coumarin 460 dissolved in methanol with 2×10 -3 mol/l concentration, energy transference of η =11.7% was obtained at the wavelength of 460 nm.