A friction conveying system, comprising a friction driving unit comprising a rotation driving component, a first connecting rod, a second connecting rod, at least one first roller arranged on the first connecting rod, and at least one second roller arranged on the second connecting rod, a clamping unit comprising a clamping driving component, and a friction driving component; wherein: by the clamping driving component, the first connecting rod and the second connecting rod are moved towards each other, to cause the at least one first roller and the at least one second roller by circumferential surfaces thereof to clamp the friction driving component; and by the rotation driving component, the at least one first roller and/or the at least one second roller are rotated, to cause the friction driving component clamped therebetween to move, by means of frictional force, characterized in that the at least one first roller comprises a main driving roller and an auxiliary driving roller arranged on the first connecting rod in a conveying direction and driven by the rotation driving component to rotate synchronously, the at least one second roller comprises two driven rollers arranged on the second connecting rod in the conveying direction and corresponding to the main driving roller and the auxiliary driving roller respectively. a friction driving unit comprising a rotation driving component, a first connecting rod, a second connecting rod, at least one first roller arranged on the first connecting rod, and at least one second roller arranged on the second connecting rod, a rotation driving component, a first connecting rod, a second connecting rod, at least one first roller arranged on the first connecting rod, and at least one second roller arranged on the second connecting rod, a clamping unit comprising a clamping driving component, and a friction driving component; wherein: by the clamping driving component, the first connecting rod and the second connecting rod are moved towards each other, to cause the at least one first roller and the at least one second roller by circumferential surfaces thereof to clamp the friction driving component; and by the rotation driving component, the at least one first roller and/or the at least one second roller are rotated, to cause the friction driving component clamped therebetween to move, by means of frictional force, characterized in that the at least one first roller comprises a main driving roller and an auxiliary driving roller arranged on the first connecting rod in a conveying direction and driven by the rotation driving component to rotate synchronously, the at least one second roller comprises two driven rollers arranged on the second connecting rod in the conveying direction and corresponding to the main driving roller and the auxiliary driving roller respectively. by the clamping driving component, the first connecting rod and the second connecting rod are moved towards each other, to cause the at least one first roller and the at least one second roller by circumferential surfaces thereof to clamp the friction driving component; and by the rotation driving component, the at least one first roller and/or the at least one second roller are rotated, to cause the friction driving component clamped therebetween to move, by means of frictional force, characterized in that the at least one first roller comprises a main driving roller and an auxiliary driving roller arranged on the first connecting rod in a conveying direction and driven by the rotation driving component to rotate synchronously, the at least one second roller comprises two driven rollers arranged on the second connecting rod in the conveying direction and corresponding to the main driving roller and the auxiliary driving roller respectively.