Abstract: A power adapter having replaceable plugs includes a main body, a socket module, a conducting wire, a rotating casing and a household plug. The main body includes a wire containing groove, an automobile plug and a connecting base formed on both sides of the wire containing groove, and electric conducting terminals disposed at the connecting base. The socket module includes a fixing base connected to the connecting base and a socket contained inside the fixing base, and the socket is electrically connected to each electric conducting terminal. The conducting wire is electrically connected to an automobile plug and each electric conducting terminal, wound into a wire containing groove, and covered by a rotating casing. The rotating casing is rotated for winding the conducting wire, and a replaceable household plug is inserted into the socket, and the household plug is electrically connected to a circuit of the main body.