The invention discloses a hoisting mechanism for a dynamic compactor. The hoisting mechanism comprises a driving motor (1), a speed reducer (3), a reel (5), a brake (8), a spindle (9), an encoder (4) and a control device (10). The hoisting mechanism has the advantages that the hoisting mechanism is simple in structure, an internal expansion clutch is arranged in the reel, and the reel can be driven to rotate, so that the purpose of hoisting a rammer can be achieved; the hoisting mechanism is provided with the calipers brake, a rope pressing roller and the encoder, so that continuous falling of a steel wire rope can be controlled timely after the rammer falls to the ground, and steel wire rope twining and disorder phenomena due to the fact that the steel wire rope is excessively released can be prevented; the falling rammer can be quickly controlled by a control system and the encoder, accordingly, a working procedure for hooking and hoisting an existing rammer again in current construction procedures after the existing rammer is unhooked can be omitted, the construction intensity can be reduced, and potential safety hazards can be eliminated; the hoisting mechanism is compact in structure, convenient to use, high in work efficiency and suitable for large-scale popularization and application, and is safe and reliable.