The invention discloses a high-yield fumaric acid Rhizopus delemar engineering bacterium and application thereof, and belongs to the field of genetic engineering. An encoded gene ScPYC1 of pyruvate carboxylase, which originates from saccharomyces cerevisiae, is overexpressed in a bacterial strain Rhizopus delemar NRRL1526 for producing the fumaric acid through a fermentation method, so that a recombinant bacterial strain R. delemar-pRS303H-PC, of which the activity of the pyruvate carboxylase is improved, is obtained, and the activity of the pyruvate carboxylase of the recombinant bacterial strain R. delemar-pRS303H-PC is improved by 5.4 times (reaches 4.59 U / mg protein); and glucose serves as the only carbon source, the output of the fumaric acid reaches 55.92 g / L and is 1.19 times of that of an original strain after the glucose is fermented for 72h, and the high-yield fumaric acid Rhizopus delemar engineering bacterium has a broad application prospect.