The base resin of poly(MAA-DEAQ) copolymer was synthesized by copolymerizing N-methylolacrylamide (MAA) with N, N, N-triethyl-N- methacryloyloxyethylammonium ethyls fate(DEAQ) , and the antistatic agent(PMDA) for PET woven fabrics was prepared by blending water soluble copolymer with lithium chloride and sodium gluconate having high hydroscopic properties. After the examination of viscosity and stability of water solution of the prepared antistatic, antistatic characteristics tested for 100 S PET textured yarn treating with or without resin. As the results, electric resistance before washing for PMDA-3 and PMDA-4 were 8$ imes$106 mm and 3$ imes$10 mm, respectively ; friction voltage characteristics values were 37V, 26V, and half life characteristics values were 0.8$^{circ}$sec, 0.7 sec, respectively ; no remarkable changes in antistatic.