The invention provides a preparation method of an intelligent waterproof coating with a self-healing function. The method comprises the steps as follows: crushing treatment, preparation of a first dispersion liquid, preparation of a second dispersion liquid, preparation of a mixed dispersion liquid, standing reaction, thixotropic treatment, preparation of a mixed solution, ultrasonic dispersion treatment and defoaming treatment. By the aid of the waterproof coating prepared with the preparation method, when concrete is prone to water seepage due to cracking or cracks make contact with the air,the repair agent can be automatically subjected to a damp curing reaction with seeped water or moisture in the air so as to repair cracks of the concrete, the service life of a concrete material canbe prolonged, the prepared waterproof coating is non-toxic, odorless, safe and environmentally friendly, a special water-resistant structure is formed on the surface of a film of the waterproof coating prepared through ultrasonic dispersion treatment, so that the film surface has very high hydrophobic and waterproof properties, high water resistance, alkali resistance and ultraviolet resistance and higher elongation at break, tensile strength and automatic repair function and cannot be lost easily.