China has many outdoor brick cultural relics which are suffering severely from problems caused by salt damage. With a view to understanding the failure mechanism caused by soluble salts, and overcoming the problem, we have developed a two-component inorganic reinforcement material. The reinforcement method is alternate dropping of barium hydroxide solution in methanol and oxalic acid (H₂C₂O₄) and phosphoric acid (H₃PO₄) solution in ethanol and simulating typical environments of distribution of soluble salts [sodium chloride (NaCl), potassium chloride (KCl) and sodium sulfate (Na₂SO₄)]. The operating steps accomplish both reinforcement and desalination. We tracked the flowing and conversion of salts by means of various modern scientific methods such as X-ray diffraction (XRD), X-ray fluorescence (XRF), scanning electron microcopy (SEM)-Mapping and wireless damping anti-drillers. The final results show that this procedure can not only reinforce samples, but is also able to irreversibly convert Na₂SO₄ (the most destructive salt) to BaSO₄ (the main component of barite). Reinforcement and desalination can be accomplished simultaneously. In summary, this new method has great application potential.