PURPOSE: To lighten a rice transplanter of walking type for multi rows planting by providing first and second transmission cases having planting arms and third transmission case for driving of traverse feeding of seedling loading stage in specific arranged state.

CONSTITUTION: A pipe frame 11 supporting transmission cases 12 is connected to first transmission case 7 having central planting arm and only traverse feeding shaft of seedling loading stage and reciprocating traverse feeding mechanism of said shaft are built in third transmission case 24. Special increase of strength around connecting part pipe frame 11 is not necessary and the third transmission case is able to be steeply lighten.