The invention relates to pressure-sensitive adhesive, in particular to a pressure-sensitive adhesive composition capable of being used for silk-screen printing. The pressure-sensitive adhesive composition capable of being used for silk-screen printing is composed of a component A, a component B, a component C, a component D, a component E and a component F, wherein the component A is normal pressure-sensitive adhesive, the component B is a thickening agent, the dosage of the component B is 0.1-3% of that of the component A, the component C is a flatting agent, the dosage of the component C is 0.05-0.5% of that of the component A, the component D is a solvent having a certain swelling property on the emulsion particles in the pressure-sensitive adhesive of the component A, the dosage of the component D is 1-10% of that of the component A, the component E is a solvent having no wetting ability on the silk-screen printing material nylon, and the dosage of the component E is 1-5% of that of the component A, the component F is a non-ionic mildew preventive agent, and the dosage of the component F is 0.01-0.1% of that of the component A. The pressure-sensitive adhesive composition capable of being used for silk-screen printing is quite large in viscosity, fast and complete in blanking, free of sticking meshes, good in leveling effect, and free of bubbles and pits after the adhesive layer is dried.