Treating fluid for paint inkjet printing of textiles, preparation method of treating fluid and paint inkjet printing method

The invention relates to treating fluid for paint inkjet printing of textiles, a preparation method of the treating fluid and a paint inkjet printing method for the textiles. The treating fluid is acidic and comprises following components in percentage by mass in terms of total mass percentage being 100%: 50%-70% of anionic-nonionic resin emulsion, 0.1%-2.0% of a pH regulator, 0-3.5% of a thickening agent, 0.2%-1.0% of a dispersing agent and the balance of water. When the surface of fabric is covered with the treating fluid, condensation of paint ink is facilitated, the ink is prevented from diffusing on the textile fabric, and definition of inkjet printing and brilliance of colors are effectively improved; besides, the treating fluid belongs to the acidic system, and color fastness is improved; the technical blank of the acidic treating fluid for the inkjet printing is filled up; the type selection range of resin is wide, the resin is not prone to demulsification, and the optional range of the corresponding