The invention provides a molding technology and molding device for a carbon fiber pultrusion plate with the surface coated with demolding cloth, and relates to the field of wind turbine blade production. The molding technology comprises the steps of paying off carbon fiber yarn, conducting impregnating with resin, guiding a pre-molding mold, conducting curing with a curing molding mold, conductingpulling with a pulling device and conducting cutting molding, and further comprises the heating step specifically comprising the substep of heating the carbon fiber yarn before impregnating is conducted and the paying-off step specifically comprising the substeps of coating the surfaces of the upper side and the lower side of the carbon fiber yarn with the demolding cloth and enabling the demolding cloth to enter an impregnating tank along with the carbon fiber yarn, wherein the carbon fiber yarn is subjected to heating and curing molding in three heating areas of which the temperature is sequentially increased in the curing molding mold. The surface of the carbon fiber pultrusion plate molded through the technology is coated with the demolding cloth, and subsequent wind turbine blade main beam manufacturing is convenient.