The invention discloses an umbrella cover seamless colloid laminating device and method. The device comprises a support frame, a drying structure and a pressing structure, wherein a drive roller is mounted on the left side of the support frame, a conveying roller is mounted on the right side of the support frame, a transitional roller capable of being adjusted vertically is mounted in a trip-shaped hole, a pressing bracket is fixed to the rear end of the support frame, the pressing structure is mounted on the pressing bracket, a base plate made of a stainless steel material is arranged below the pressing structure and fixed to the support frame, a PLC (programmable logic controller) is fixed to the side surface of an auxiliary supporting leg, two air suction fans are fixed to the support frame located below the drying structure, and the pressing bracket and a drying bracket fixed to the support frame are both of L-shaped structures. According to the device, an electric cylinder is adopted to push a press plate to perform pressing work, springs are mounted on guiding rods connected between the pressing plate and a lifting plate, a buffering effect is realized in a pressing process,pressing and drying are integrated, the processes are integrated, an umbrella cover laminating process is simplified, and efficiency and accuracy are improved.