The present invention relates to a socket having rotary plug structure which comprises a housing and a rotary plug exposed outside the housing. At least a first socket is coupled to the rotary plug thereby allowing an electric equipment to be inserted. The rotary plug includes a rotation part and a ground pin fastened in the rotation part. A fasten pin is formed in the rotation part, wherein the distanced defined from the center point of the ground pin to the center point of the fasten pin is 38.9 mm±10%. With the mentioned structure, the socket having rotary plug structure is enabled to be fastened onto a socket panel.