A power output mechanism for an operation and waling intermittently alternative transplanting machine comprises a component assembling frame, a power machine, a power machine output transmission mechanism, an intermittent operation power output mechanism, an intermittent walking power output mechanism, an intermittent walking power output and intermittent operation power output switching control mechanism. The power output mechanism for the operation and walking intermittently alternative transplanting machine has the advantages that the core technology of the operation and walking intermittently alternative transplanting machine for fields and gardens is achieved, full automation of walking and seedling intermittently alternative farming is achieved, manpower is saved, the cultivation efficiency is improved, and the seedling transplanting quality is improved.