An object is to provide a food dough extending apparatus capable of adjusting a vertical position of an extending roller unit in an obliquely vertical direction in accordance with a thickness of food dough. A food dough apparatus includes an inclined transporting unit 7 inclined and configured to transport to-be-extended food dough 9 upward, a horizontal direction transporting unit 11 configured to transport the food dough 9 transported from the inclined transporting unit 7 in a horizontal direction, and an extending roller unit 13 provided above over an area from an upper end of the inclined transporting unit 7 to the horizontal direction transporting unit 11 and configured to extend the food dough 9. The extending roller unit 13 is vertically adjustable in a direction intersecting an inclination direction of the inclined transporting unit 7 and being upwardly inclined toward the inclined transporting unit 7. The extending roller unit 13 includes dust sealing mechanisms provided between ends of the extending rollers 79 and a pair of endless members 75, the dust sealing mechanism inhibiting circulation of air between rotation regions of extending rollers 79 and traveling regions of the pair of endless members 75.