The invention discloses a processing method of a 3D flower-type fleece fabric and relates to the technical field of fabric processing. The processing method of the 3D flower-type fleece fabric comprises the following steps: pre-shaping the fabric, and generating fleece on the surface of the fabric by galling. A flower roller with at least three different layers of concave-convex flower-type patterns is adopted, the fleece on the surface of the fabric is extruded by the 3D flower roller with broken flower paste, the fleece is coated with different shades of the broken flower paste, then the fabric is heated, the broken flower paste is dissolved and permeated into the fleece, the fleece is subjected to different layers of corrosion, and the broken flower effect with three different layers is achieved, the pH value of the fabric is adjusted by glacial acetic acid, and then the conventional aftertreatment is conducted. The layers of the flower type are changed from the original one layer into two layers or more, so that the overall aesthetic degree of the fabric is improved. Meanwhile, due to the action of the 3D flower roller, the flower type arrangement and depth can be controlled according to requirements.