Abstract: A swivel electric plug includes a base block having three annular terminal grooves concentrically provided in a recessed surface and a coupling groove around the recessed surface. Three annular metal plates are fastened in to the annular terminal grooves and connected to a respective wire in an electric wire being fastened to the base block. A circular cover plate is rotatably mounted on the recessed surface of the base block, the circular cover plate having a peripheral bottom coupling flange coupled to the coupling groove on the base block and holding two metal blades and a grounding prong. The metal blades and the ground prong each have an inner contact end respectively disposed in contact with the annular metal plates in the annular terminal grooves of said base block.