The present invention discloses a safety plug socket, which mainly includes a sliding insulating base disposed within an outer housing. A pair of contact conducting strips is located on a bottom surface of the sliding insulating base, and conductive clips disposed internal of a pair of socket holes extend to the bottom portion of the outer housing and form folded strips. When a pair of plug terminals is correctly inserted, then the sliding insulating base is pressed down, thereby causing the lower contact conducting strips to make conductive contact with the folded strips, and causing clips on the conductive clips to make contact with the inserted plug terminals to supply power for use by an electronic product. When a plug is incorrectly inserted or metallic foreign body is inserted, then no electric conduction is realized.