PROBLEM TO BE SOLVED: To extremely smoothly push out a pot seedling raised in a pot seedling box without damaging the bottom of a pot seedling chamber or the pot seedling in the seedling box by providing a seedling table with a specific guide. SOLUTION: A pot seedling transplanting machine 1 is provided with a seedling table 3 capable of holding a pot seedling box A having a number of pot seedling chambers B arranged in checker pattern and a pot seedling P is pushed out of the pot seedling box A and planted on a field. The seedling table 3 is provided with a guide 5 insertable between the seedling chambers B laterally arranged in a row in the seedling box A. The posture of the pot seedling chamber B of the flexible pot seedling box A inserted in the seedling table 3 is controlled by this process to keep the bottom face of the seedling chamber B perpendicular to a seedling pushing pin 4.
