The invention provides the preparation process of silicate colorized passivating liquid for a clean-type galvanization member. Material is prepared according to the following formulation: 3 to 10 g/Lof sodium silicate, 1 to 3 g/L of boric acid, 20 to 30 mL/L of H2O2(30%), 3 to 5 mL/L of HNO3(65%), 3 to 5 mL/L of H2SO4(98%), 0.1 to 0.5 g/L of KMnO4, 1 to 3 g/L of NaAc, and the balance H2O. The material is dissolved and evenly mixed, the pH value is adjusted to 0.5 to 1.0, and the silicate colorized passivating liquid is obtained. The passivating liquid leads the surface of a clad layer of galvanization material to form an even, compact and colorized passivating film, and the decay resistance of the material can also be obviously improved. Proved by neutral salt spray tests, the time of white rust can reach 80 to 120 hours. The raw material used in the passivating liquid does not contain hexavalent chrome, trivalent chromium or other heavy metal ions, such as Ag, Cu, Pb, Ni, and the like, which are harmful to bodies and the environment. In addition, the preparation process of the passivating liquid has low preparation cost and high passivating efficiency and is nuisanceless.