PROBLEM TO BE SOLVED: To certainly keep a folded state without requiring a hook, etc., when folding up an extended stand and to easily carry and store. SOLUTION: This apparatus for conveying raising seedling box is characterized by mounting a raising seedling operating device 5 on a main frame 4 having a conveying mechanism 3 conveying the raising seedling box 2, connecting the extended stand 7 to the end of the main frame 4 through a pivotally supporting shaft 6, forming engaging parts 8 at the vicinity to the pivotally supporting shaft 6 in the extended stand 7, forming a shaft hole 9 supporting the pivotally supporting shaft 6 while allowing the shaft 6 to slightly make a vertical motion to the main frame 4, forming a engaged part 10 with which the engaging part 8 can be engaged when lifting the extended stand 7 while upwardly turning around the pivotally supporting shaft 6 and prevented from slipping when lowering and tilting the folded posture of the extended stand 7 in which the engaging part 8 is engaged with the engaged part 10 to the raising seedling operating device 5.
