The invention discloses a combined type feeding device used in gravel production, and belongs to the technical field of gravel production feeding equipment. According to the technical scheme, the combined type feeding device is characterized by comprising a supporting base, wherein a hopper is arranged above the left side of the supporting base, a feeding frame, a crushing cavity, a feeding barrel and a vibrating screen are sequentially arranged above the supporting base from left to right, a gravel washing machine is arranged below a supporting base, the crushing cavity is used for crushing processing, crushed gravel is completely separated from silt solidified on the gravel, a feeding motor is started, a spiral shaft rotates, the feeding barrel conveniently conveys the crushed gravel to the position above the vibrating screen to be screened, screening holes penetrate through the outer side wall of the feeding barrel, when the gravel is rotationally conveyed in the feeding barrel, the silt is screened out of the feeding barrel, preliminary screening of the gravel is facilitated, a vibration motor is started, screening operation of the gravel is facilitated, the purpose that the gravel and the silt are completely screened is achieved, and therefore, the production and processing quality of the gravel is improved.