Novel ecological waterproof coating

The invention discloses a novel ecological waterproof coating which is characterized by comprising a component A and a component B. The component A comprises styrene-butadiene emulsion, tributyl phosphate, a dispersing agent, a heat stabilizer and inorganic base. The component B is prepared from ordinary pure silica cement, mineral powder, a water repellent, lignin, an expanding agent, a mildew preventive, organic acid, polyaluminum ferric chloride, sodium metaaluminate and negative ion powder. The preparation method comprises the following steps: (1) sequentially adding the components in the component A into a mixing kettle, starting stirring, uniformly mixing, and continuously stirring for 2 hours; and (2) sequentially adding all the components in the component B into the mixing kettle, starting to stir for 2 hours, and uniformly mixing. The novel ecological waterproof coating provided by the invention has the advantages of wide adaptability, acid and alkali resistance, high temperature resistance and milde