The utility model discloses a convex multi-roll material distributor applied to a sintering technology. The convex multi-roll material distributor is composed of a reflection plate, a convex material roll segment and a beveled material roller segment, wherein the reflection plate is located obliquely on the convex material roll segment and fixed to convex material roll segment supports. The material distributor has the advantages that as material distribution rolls are arranged to be of a convex shape, fine particle materials can be efficiently distributed at the upper portion of a material layer, the phenomenon that the materials are accumulated or stuck is avoided, and the requirements for segregation material distribution can be satisfied; the material distributor is simple in structure and can flexibly achieve the adjustment of screening gaps by adjusting the suspension height of material roller supports, thereby meeting the requirements for segregation material distribution with different parameters; due to use of the reflection plate of the material distributor, the problems that three rolls at the upper portion of a conventional nine-roll material distributor idle, so that operational efficiency is low, and the cost is high are solved. The material distributor is further suitable for improvement on the efficiency of other roller screens.