The invention relates to an adjustable concrete pouring chute device. The chute device comprises an upper frame, a lower frame and a U-shaped plate. The upper frame comprises upper front rods, upper front fixed rods, upper rear rods, upper rear fixed rods and upper reinforcing rods. The lower frame comprises lower front rods, lower front fixed rods, lower rear rods, lower rear fixed rods, a firsthorizontal rod, a second horizontal rod, lower reinforcing rods and casters. The upper front rods and the corresponding lower front rods are in sleeve connection and fixed through bolts by adjustment.The upper rear rods and the corresponding lower rear rods are in sleeve connection and fixed through bolts by adjustment. The first horizontal rod and the second horizontal rod on the same side are in sleeve connection and fixed through bolts by adjustment. The lower reinforcing rods are fixed with the lower rear rods or the lower front rods on the same side through bolts by adjustment. The U-shaped plate is fixed in the space formed by the tops of the two upper front rods and the two upper rear rods. The device can adjust the position, the height and the slope of a chute and is stable in structure, simple in operation and simple in installation.