To provide an antistatic conjugated yarn having excellent properties of polyester fiber such as fiber strength, excellent in washing resistance, and having excellent antistatic property and low dusting property, to provide antistatic textile, and to provide a dustproof wear.

The conjugated yarn is obtained by using a moisture-absorbing synthetic fiber yarn A having ≥1% equilibrium moisture absorption at 20°C and 40% RH and a polyester fiber yarn B, so that the ratio DA/DB of yarn length DA of the moisture-absorbing synthetic fiber yarn A to the yarn length DB of the polyester fiber yarn B is ≥0.7, the textile is woven or knitted by using the elastic conjugated yarn and the dustproof wear is sewn thereof.