The invention discloses an antibacterial powder coating for pipeline. The antibacterial powder coating comprises the following raw materials in parts by weight: 60-90 parts of resin powder, 20-30 parts of filler, 0.5-1.5 parts of tetramethyl ammonium iodide, 3-5 parts of enhancer, 2-4 parts of corrosion inhibitor, 1-8 parts of antibacterial agent and 0.2-0.7 parts of paint. The proportion of each raw material of the antibacterial powder coating for pipeline is reasonable, the corrosion resistance of the material is enhanced, and the antibacterial powder coating has excellent inhibiting and killing effects on microorganisms like fungi, bacteria and mould, is healthy and environment-friendly, and is especially applicable to pipelines for storing and transporting healthy and clean products; after being sprayed with the paint, the surface gloss is good and products are attractive and practical; the preparation method is convenient, the materials are easy to get, the process is simple, the production cost is saved, the effect is significant, and so the antibacterial powder coating has wide application prospect.