Abstract: The present disclosure discloses a method for preparing a tensile specimen and a vibration curing device. The method includes obtaining a colloid mixture and putting it into a beaker and using a stirring device to stir the colloid mixture mixed evenly. The method further includes putting the colloid mixture into a vacuum dryer, and spraying a release agent on cleaned tensile specimen mold, and using a needle to inject the colloid mixture into a molding groove of the tensile specimen mold and filling the molding groove, fixing the pressing plate and the tensile specimen mold together to form a whole mold, fixing it on a vibration platform of a vibration device, turning on the vibration device to vibrate the whole mold and to heat the whole mold to a predetermined temperature, cooling the whole mold, and demolding the whole mold to obtain the tensile specimen of the structural adhesive.