The utility model belongs to the field of drilling jetting devices, and particularly relates to a rotating storage tank device for an abrasive. The rotating storage tank device for the abrasive comprises a storage tank which comprises a tank body, wherein one end of the tank body is connected with a hydraulic drive device through a drive shaft, a slide rail is arranged on the periphery of the other end, a pulley is correspondingly arranged on the slide rail and mounted on a storage tank bracket, a guide cylinder is arranged at an opening end of the tank body, a feeding hopper is arranged at the upper part of the outer end of the guide cylinder, the inner end is placed in a screen drum located in the tank body, screen holes are formed in the wall of the screen drum, the periphery of the bottom is connected with a screen drum support frame, a conveying blade is arranged on one side of the screen drum, the screen drum support frame and the conveying blade are mounted on the inner wall of the tank body, a discharging port is formed in the tank body corresponding to the tail end of the conveying blade, a buffer hopper is arranged below the discharging port, and a screw conveyer is arranged at the bottom of the buffer hopper and mounted on a conveyor bracket. The rotating storage tank device for the abrasive is simple and reasonable in structure, can finish rotating feeding and conveying work simultaneously, can control the conveying amount of the abrasive accurately and has a great effect on recycling of the abrasive.