The invention provides an automatic blank storage machine. The automatic blank storage machine comprises vertical frames, and a fixing frame capable of vertically ascending and descending along the vertical frames is arranged between the vertical frames. A plurality of blank storage frames are evenly arranged in the fixing frame. Each blank storage frame comprises a fixing base, a sliding platformand a drive mechanism, wherein the sliding platform is movably arranged on the upper side of the fixing base, the drive mechanism drives the sliding platform to slide forwards, and a supporting adjusting unit is arranged between the fixing base and the sliding platform and used for assisting in forward sliding of the sliding platform. According to the provided automatic blank storage machine, since the blank storage frames in the fixing frame are tidily arranged into one line, through forward sliding of the sliding platforms, ceramic tile blanks are conveniently placed on the sliding platforms, the ceramic tile blanks arranged on the sliding platforms are conveniently taken, usage is convenient, running is simple and reliable, and rapid blank storage and discharging are achieved.