The present invention provides a method for efficiently producing L-homophenylalanine and a strain producing L-homophenylalanine. In the present invention, a new route for the synthesis of L-homophenylalanine by a cascade enzymatic method using cheap benzaldehyde and pyruvic acid as raw materials is designed. By constructing the pathway-related enzymes into the same E. coli strain, a recombinant E. coli is obtained, with which L-homophenylalanine is catalytically produced through reaction in a 5 L reactor, with a yield of 100.9 g/L, a conversion rate of 94%, and ee>99%. Compared with the existing main methods for producing L-HPA, the production cost of L-homophenylalanine is greatly reduced. Thus, the present invention has good application prospects.