The invention discloses a production process for reducing cracks on a steel plate formed by rolling a steel billet. Through the technical scheme, the cracks on the surface of the steel plate formed byrolling the steel billet through a hot charging and hot conveying process can be effectively reduced, and meanwhile the internal flaw detection quality of the steel plate formed by rolling the continuous casting steel billet is also improved. The production process comprises the specific method that after the continuous casting steel billet passes a straightening point, water mist cooling nozzlesare additionally arranged on a horizontal pulling-straightening section, so that the surface of the steel billet is cooled rapidly, the steel billet structure complete the process that austenite is transformed into ferrite and pearlite rapidly in an accelerated mode, and the problems that in a traditional hot charging and hot conveying process, a two-phase region or an austenite region is heated,consequently, grains are coarsened, and in the rolling process, the rolling propagating cracks are formed because of the low plasticity are avoided. Compared with the prior art, not only is the hot charging rate increased, but also the surface cracks are reduced by a large margin. The production technical scheme is quite effective for the cracks on the surfaces of the low-alloy steel plates and the micro-alloy steel plates.