A riding type rice-planting machine is provided, which improves the workability of the seedling transplanting by preventing a front-wheel differential motion device from being locked. A riding type rice-planting machine comprises: a housing position(A) stored in the front portion of the equipment body； and a position changeable handling tool(60). The intermediate position(C) is set up between the housing position and working position. The front-wheel differential motion device is operated while being locked between the intermediate position and working position. The differential lock operation unit is equipped in the floor of the operating part.
