The invention relates to an infusion speed controller which comprises a shell, an infusion device, a clamping device and a power device. The infusion device comprises a disc base, a T-shaped liquid inlet
pipe, a T-shaped liquid
discharge pipe, a first arc-shaped sliding groove, a second arc-shaped sliding groove, a first through hole, a second through hole, a third through hole, a fourth through hole, a first arc-shaped sliding block and a second arc-shaped sliding block, wherein the first through hole and the second through hole are formed in the T-shaped liquid inlet
pipe, the third through hole and the fourth through hole are formed in the T-shaped liquid
discharge pipe, the first arc-shaped sliding block is arranged in the first arc-shaped sliding groove, and the second arc-shaped sliding block is arranged in the second arc-shaped sliding groove. The fifth through hole, the sixth through hole, the seventh through hole and the eighth through hole are formed in the disc base, the ninth through hole is formed in the first arc-shaped sliding block, the tenth through hole is formed in the second arc-shaped sliding block, and the
insertion hole is formed in the push rod. The power device comprises a main shaft, a
rotating disc, an inserting rod, a hollow hemisphere, a base, a first transmission shaft, a speed changing
assembly, a T-shaped rotating plate, an arc-shaped limiting plate, an elastic rod, a plurality of limiting grooves formed in the hollow hemisphere and a plurality of open grooves.