The invention provides a rotary socket which comprises a body and a rotary disc. The rotary disc is rotationally arranged in the body, jacks are formed in the rotary disc, conductive rail grooves and insulation grooves which correspond to the jacks are formed in the body, and the insulation grooves are formed in positions between the conductive rail grooves at intervals. The rotary socket with the structure has the advantage that electric shock phenomena due to the fact that conductive components are plugged in the jacks when the rotary socket is not used can be prevented.