A double-sided pluggable combination structure is disclosed in this invention, which includes a double-sided pluggable power plug and a double-sided pluggable power socket. When the power plug and the power socket are engaged with each other, an insertion part of the power socket can enter into a receiving cavity from a plug port of the power plug by an obverse insertion mode or a reverse insertion mode, and each plug terminal of the power plug can be inserted into an insertion hole from a corresponding socket port of the power socket. An engaged portion of the plug terminal can be clamped by elastic arms of a socket terminal, thereby forming a stable electric contact between the plug terminal and the socket terminal.