The invention provides a hydrographic transfer printing method. The method comprises the following steps that 1, indoor temperature is adjusted to 22 DEG C-26 DEG C, and indoor humidity is adjusted to 60%-70%; 2, water temperature is adjusted to 34 DEG C-36 DEG C, and then a product to be printed in a transferring manner and an adhesive film are arranged in water in a separated manner; 3, a transmission mechanism drives the adhesive film to move on the water level, the moving speed of the adhesive film is controlled to range from 1.3 m/min to 1.6 m/min, and in the process, a static spray gun above the water level spays an activator agent mixture to the upper surface of the adhesive film, wherein the activator agent mixture contains aluminum silver powder; and 4, the adhesive film is moved to the surface of the product to be printed in the transferring manner, and transfer printing is carried out.