The invention discloses a stepless gear roller set and a stepless gear roller crusher. The stepless gear roller set comprises at least two gear rollers, wherein a gap is formed between the two adjacent gear rollers, and the gap is gradually enlarged from one side to the other side. The stepless gear roller crusher consists of a feed opening, a sorting feeder, the stepless gear roller set, a sieving feed opening, a sieving machine, a coarse material refeeding opening, a discharge opening and a main machine frame. Aiming at overcoming the defects that an existing equipment is complex in structure, is large in size, is high in building cost, and the like, the rate of certified product of particle size after cracking of brittle materials is lower, and the excessive smashing phenomenon is serious, the stepless gear roller crusher is integrated equipment capable of sorting feeding, sorting smashing and sieving. The stepless gear roller crusher has the advantages that the structural design is simple and reasonable, the building cost is low, the floor space is small, the highest particle size certified product rate can achieve about 95%, and the crusher is the most environment-friendly, the most electricity-saving and the most durable.