At present, there are some technical difficulties in reversible information hiding in encrypted domain, such as low embedding capacity and poor robustness. In this paper, a robust reversible information hiding method in encrypted domain based on error-correcting codes is proposed. Error-correcting codes are used to encode low-bit information, and then error patterns are constructed to embed information. Error-correcting code coding adds supervisory symbols to the original image information, and uses lossless compression of high bit information of carrier image pixels to save space, so as to cope with the problem of expanding the amount of carrier data after encoding. For high bit and low bit, different encryption algorithms are used to ensure the separation of decryption and message extraction. The voting principle is used to segment the image, which improves the robustness of the algorithm. At the receiver, the message can be extracted accurately by using the check matrix, and the algorithm can be reversible by using the error-correcting characteristics of the error-correcting codes. Experiments show that the algorithm is separable and has a high embedding rate. It achieves complete reversible recovery of the carrier and has good robustness.