The present invention relates to a gene expression cassette including a strong promoter derived from lactic acid bacteria, and a gene expression vector including the same. According to the present invention, a large amount of a human protein, the physiological activity of which has been verified, may be stably produced with high efficiency by introducing a useful foreign gene into an expression vector and transforming probiotics with the expression vector. Through the production of this protein, it is possible to provide a basis for developing functional probiotics and making products using them.
