Abstract: In order to improve the antistatic properties of synthetic fabrics, antistatic agent TF-480 was selected to finish the dyed polyester and nylon fabrics respectively. The influences of the antistatic agent dosage, baking temperature, time, and crosslinking agent and its amount on the performance of the finished fabrics was discussed. The process conditions were optimized. The antistatic properties of synthetic fabrics were examined by measuring the peak value of the static voltage and its half life, and the durability of the antistatic property of the fabrics after 20 washing cycles was tested. The color change of the fabrics before and after finishing and washing was observed by measuring their K/S values. The results indicated that better antistatic finish effect is got under the following conditions: TF-480 dosage 30~40g/L, baking temperature 170~180℃, baking time 30~40 s. In particular, the polyester fabric retains good antistatic property after being washed many times, and its color exhibits little change. It is found that addition of crosslinking agent in the finishing faciliates improving the antistatic property of nylon fabric.