The invention discloses a novel power socket device, which comprises a power socket and a plug. A sliding cavity with a rightward opening is formed in the power socket; the right end of the sliding cavity is provided with positioning bulges; a sliding frame is installed in the sliding cavity in a manner of sliding from left to right; shoulders matched with the positioning bulges are arranged at the right end of the sliding frame; power supply blocks connected with mains supply are installed in a left end wall of the sliding cavity; conductive blocks matched with the power supply blocks are arranged on the left end surface of the sliding frame; inserting grooves with rightward openings are symmetrically formed in the sliding frame from top to bottom; installation cavities with openings facing the corresponding inserting grooves are symmetrically formed between the two inserting grooves in the sliding frame from top to bottom; a sliding groove with an opening facing the corresponding inserting groove and communicated with the inserting groove is formed in the left end of each mounting cavity; a first rack is arranged in each sliding groove in a manner of sliding up and down; a pinionmeshed with the corresponding first rack is rotationally arranged in each mounting cavity by means of a rotating shaft; and a large gear meshed with the corresponding pinion is rotationally arrangedat the right side of the pinion in each mounting cavity by means of the rotating shaft.