A cooking device includes: a base unit; a cooking unit including a griddle member having opposite first and second portions and a pivot portion that is disposed between the first and second portions and that is pivoted to the base unit; and an adjusting unit including a rotatable spindle mounted rotatably on the base unit and having a bent end that is connected to the second portion of the griddle member in such a manner that rotation of the spindle relative to the base unit results in pivoting movement of the griddle member relative to the base unit so as to selectively lift and lower the second portion of the griddle member relative to the base unit.