Abstract: A power plug and a conversion socket are provided. The power plug includes a casing defining an accommodating cavity. The accommodating cavity includes a cavity opening. At least two pins are partly received in the accommodating cavity and protrude out of the casing through the cavity opening. The at least two pins are movable relative to the casing. At least two conductive connectors are electrically connected with the at least two pins and movable together with the at least two pins. At least two metal pieces electrical are connected with the at least two conductive connectors. Wherein each metal piece provides a first force and a second force onto the conductive member which is connected with each metal piece, the first force presses the conductive member toward a plug-in direction, the second force presses the conductive toward a direction opposite to the plug-in direction.