Abstract: Disclosed herein is a process for producing a peanut milk product, which includes subjecting a milk material to a hydrolysis reaction with lactase and transglucosidase to obtain a milk product, immersing peanut kernels in water to obtain swelled peanut kernels, subjecting the swelled peanut kernels to a steam cooking treatment to obtain steamed peanut kernels, and admixing the milk product with the steamed peanut kernels, followed by subjecting a mixture thus obtained to a heating treatment, so as to obtain the peanut milk product. A method for improving gut health using the peanut milk product and a canned food containing the peanut milk product are also disclosed.