The invention discloses a feeding platform of an inkjet coding machine. The feeding platform of the inkjet coding machine comprises a platform rack, wherein at least two mutually parallel belt wheels are arranged on the platform rack, and the belt wheels are winded with conveyer belts. The feeding platform of the inkjet coding machine further comprises two limiting devices which are arranged on the platform rack and are located at different sides of the conveyor belts respectively, the limiting devices comprise baffle blocks, and horizontal sliding rods are fixedly connected to the baffle blocks; a through hole is further formed in the platform rack, and a vertical column is arranged in the through hole; a height adjusting bolt is further arranged on the platform rack, the end portion of the threaded end of the height adjusting bolt makes contact with the vertical column, sliding rod holes are formed above the vertical column, the horizontal sliding rods and the sliding rod holes are matched in a clearance fit mode; a width adjusting blot is further arranged on the vertical column, the end portion of the threaded end of the width adjusting blot makes contact with the horizontal sliding rods, the end portions of the baffle blocks are provided with arc-shaped portions respectively, and the two arc-shaped portions are located at the same side of the platform rack. By means of the feeding platform of the inkjet coding machine, accuracy of code printing positions and code printing efficiency of packing boxes are facilitated.