Recombinant strain producing L-amino acids, constructing method therefor and method for producing L-amino acids

A recombinant bacteria producing L-amino acid(s), said recombinant bacteria has reduced expression of the glucose-6-phosphate isomerase gene pgi and improved expression of the glucose-6-phosphate dehydrogenase gene zwf-opcA than the starting bacteria, wherein:

• said starting bacterium is a bacterial strain that can accumulate target amino acid(s) and preferably, said amino acid is L-histidine, wherein, the gene pgi on the chromosome of the recombinant bacterium has been inactivated, preferably knocked out or the regulatory element of the gene pgi has been replaced with a regulatory element with low transcription or low expression activity, also said recombinant bacteria has two or more copied genes zwf-opcA, or the promoter of the operon tkt-tal-zwf-opcA-devB on the chromosome of said starting bacterium is replaced with a strong promoter, preferably, said strong promoter is the promoter Peftu, of the original bacteria.