The invention discloses a yam bulbil roller type classifying screen. The screen comprises a driving device, a roller type screening device and a bulbil collecting device, wherein the driving device comprises two cement bases which are symmetrically arranged, sliding grooves are formed in one ends of the two cement bases, supporting rods are slidably connected in the sliding grooves, and stabilization base frames are fixedly connected to the ends, far away from the cement bases, of the supporting rods. The screen is simple in structure, low in manufacturing cost, reasonable in structure, accurate in classifying, capable of being operated manually or driven by a motor, therefore loose in operation environmental condition, powerful in function, labor-saving and strong in classifying capability, yam bulbils are screened and classified by utilizing centrifugal force, spring vibration force and gravity action, a mesh and the inner walls of screen holes are smooth, so that the bulbil surfacedamage cannot be caused, the quality can be ensured, the labor intensity is reduced, and the labor efficiency is further improved.