The invention provides a steel and aluminum strips conveying device which comprises a driving wheel, a driven wheel and a compression wheel. The driving wheel and the driven wheel are connected through a belt. The driving wheel is driven by a motor, the compression wheel is located above the driven wheel, and the compression wheel is connected with an air cylinder. According to the invention, the steel and aluminum strips can be completely and smoothly conveyed to a strip storage box by the steel and aluminum strips conveying device, and the steel and aluminum strips conveying device has the advantages of low possibility of abrasion, low cost, easiness in replacement and capability of ensuring the product quality.