The invention discloses a waste rock wool remelting recycling production system and process. The process includes: firstly treating waste rock wool in a wool collection machine by a water slag separator, controlling a water content of less than 25%, then sending the treated waste rock wool into a scraper conveyor, and at the same time sending the waste rock wool in a dust chamber by a spiral conveyor below a reject bin into the scraper conveyor; then crushing the waste rock wool in the scraper conveyor by a crusher, then sending the crushed waste rock wool by a spiral conveyor into a drying kiln for drying to a water content of less than 0.5%, and then conveying the dried waste rock wool to an elevating conveyor by a belt conveyor; and finally, transporting the dried waste rock wool by the elevating conveyor into a stock bin slantingly above a melting electric furnace mouth, conveying the waste rock wool in the stock bin by a vibrating conveyor into the melting electric furnace for melting, and making usable rock wool. Production practice verifies that the production line provided by the invention can obviously reduce the production and post-treatment cost, and has remarkable economic and environmental benefits.