The invention provides an embedded type USB (universal serial bus) cover opening and closing structure. The embedded type USB cover opening and closing structure comprises a panel of a vehicular audio system, a USB plug interface on the panel and a cover body corresponding to the USB plug interface and connected onto the panel through a rotation portion, wherein the cover body comprises a front cover plate, a left side plate and a right side plate, a metal elastic piece used to position the cover body is installed on the panel, an elastic piece limiting bulge is arranged on the metal elastic piece, and a cover body closing limiting hole and a cover body opening limiting hole which are corresponding to the elastic piece limiting bulge are respectively formed in the side plates. According to the embedded type USB cover opening and closing structure, a double shaft rotary system is used, a person only needs to use a finger to lightly flip a USB cover when the person wants to open and close the USB cover, noise can not be generated along with vibration when the USB cover is opened and closed due to the fact that the metal elastic piece which is used as a positioning device is arranged on the USB cover, and above all, the cover body can be contained in a position above/below the USB plug interface when the cover body is in an open state by adopting the above structure, and therefore the cover body can not be destroyed by a person, and the danger that the cover body falls off and is eaten by an infant by mistake is completely eradicated.