Aiming at the problem of low embedding efficiency and anti-detection capability when using Reversible Data Hiding （RDH） to protect data in scenarios with large data volume delivery， an efficient reversible data hiding scheme based on two-dimensional modulo operations was proposed. Firstly， a larger amount of information was embedded in smaller modified pixel values by modulo operations， then the number of embedded bits was increased by combining with an enhanced base conversion system， and finally the reversibility was conferred by using the halving method in combination with a double image. Simulation experiments conducted on the USC-SIPI standard image library show that the Peak Signal-to-Noise Ratio （PSNR） value of the steganographic image by the proposed scheme is about 40 dB when embedding up to 1 million bits of secret information， and the steganographic image can effectively resist the static attacks of RS （Regular Singular） steganalysis， Pixel-Difference Histogram （PDH） steganalysis， and bit-plane steganalysis. Therefore， the proposed scheme effectively improves the embedding efficiency of the original image， and has good anti-detection capability at the same time.