The invention discloses a rust-proof environmentally-friendly mechanical hand operation facility for a garden. The rust-proof environmentally-friendly mechanical hand operation facility for the gardencomprises a machine frame. A variable-speed driving device is arranged on the machine frame, and comprises a driving motor, a belt pulley, a crank support, a crank, a sliding groove, a sliding blockand an output wheel. The crank support is arranged on the machine frame, and the crank is installed on the crank support in a rotating mode. The belt pulley is installed at the rotating end of the crank and driven by the driving motor, and the complete rotation end of the crank is connected with a rolling wheel. The sliding groove is formed in the machine frame, a threaded rod is arranged in the sliding groove in the length direction, the sliding block is connected to the threaded rod in a threaded mode, and an output shaft is arranged on the sliding block. According to the variable-speed driving device of the rust-proof environmentally-friendly mechanical hand operation facility for the garden, movement of the sliding block is adjusted through the threaded rod, and therefore the output wheel can have the function of state transition of uniform movement and non-uniform movement, and the effect that a tool bit is not prone to being stuck in the soil loosening operation, the mowing operation and the like is achieved.