The invention discloses an automatic conveying and clamping device for a metallized thin film. The automatic conveying and clamping device comprises the thin film, a rolling roller, two transmission rollers and a winding roller, wherein the two transmission rollers are symmetrically arranged and are connected together through a cross rod; a clamping conveying system is arranged on the cross rod and comprises a drawing variable force measuring device and a pressing variable force measuring device; the drawing variable force measuring device is mounted at the bottom of left end of the cross rodthrough a supporting rod, and the pressing variable force measuring device is mounted on the top of the right end of the cross rod through the supporting rod; a relaxation section of the thin film isarranged between the drawing variable force measuring device and the pressing variable force measuring device in a winding mode; a low friction air cylinder is arranged on the top of the drawing variable force measuring device, and a proportional valve is arranged on the top of the low friction air cylinder; and the thin film sequentially passes through the rolling roller, the transmission rollers, the drawing variable force measuring device, the pressing variable force measuring device and the winding roller. According to the clamping conveying system, accurate adjusting and detecting are conducted on the conveying process of the metallized thin film, so that winding becomes stable.