The crystal structure of the title compound(E)-ethyl 2-(4-(2,4-dimethoxy benzylide-neamino)-5-(3,4,5-trimethoxyphenyl)-4H-1,2,4-triazol-3-ylthio)acetate(4,C_(24)H_(28)N_(4)O_(7)S,Mr=516.17)was synthesized and determined by X-ray single-crystal diffraction.The crystal belongs to the monoclinic system,space group P2_(1)/n with a=13.162(2),b=8.4506(13),c=22.602(4)Å,β=99.888(3)°,μ=0.183 mm^(-1),V=2476.5(7)Å^(3),Z=4,D_(c)=1.385 g/cm^(3),F(000)=1088,T=110(2)K,R=0.0426 and wR=0.1216 for 3859 observed reflections with I 2σ(Ⅰ).