The invention discloses a clean production process of m-carbamidoaniline hydrochloride. The clean production process comprises the following steps of: dissolving m-phenylenediamine into a sodium chloride salt water reaction system; adding an auxiliary agent into the reaction system; controlling a reaction temperature at -5 DEG C to 25 DEG C; then adding sodium cyanate and hydrochloric acid for reaction; and after the reaction is completed, carrying out post-treatment on a resulting substance to obtain m-carbamidoaniline hydrochloride, wherein the auxiliary agent is nitric acid or nitrate. According to the clean production process, salt water, instead of pure water, is used as base water, m-carbamidoaniline hydrochloride produced in the reaction can be separated out in time by using salt precipitation effects of sodium chloride, a byproduct diurea is not generated, the purity of the obtained m-carbamidoaniline hydrochloride is more than 98%, the yield is more than 95%, the content is 75%-80%, the sewage quantity is reduced by 50%, and the process is simple and high in automation degree.