The invention relates to the field of an electronic element auxiliary device, and particularly relates to an electronic element carrier band connection device. The electronic element carrier band connection device comprises a connection plate and an adhesive tape, wherein the connection plate is divided into a left connection plate and a right connection plate, the left connection plate and the right connection plate are hinged together, two sides of the left connection plate and two sides of the right connection plate are respectively provided with a clamping strip which is connected with the left and right connection plates into a whole, a transformation shaft is arranged between each clamping strip and each connection plate, a row of lock nails which are matched with two sides of a carrier band is arranged on the lower surface of each clamping strip, clamping holes corresponding to the clamping strips are formed in each connection plate, one end of the adhesive tape is fixed on the upper surface of each clamping strip, two sides of the width of the adhesive tape are provided with an adhesive surface, the adhesive surfaces are connected with the adhesive tape through a connection rib which is convenient to break, and two ends of the adhesive tape in the length direction are set to be an adhesive surface. The electronic element auxiliary device has beneficial effects that two separated carrier bands can be well connected together due to the welding of patch elements.