TO PROVIDE A SEEDLING TRANSPLANTER CAPABLE OF EFFECTIVELY SWITCHING THE SEEDLING HOLDERS BETWEEN THEIR FIRST AND SECOND CONFIGURATIONS； KEEPING THE SEEDLINGS FROM FALLING OFF THE SEEDLING HOLDERS, DESPITE SHAKY MOVEMENT OF THE BODY PORTION； IMPROVING THE OPERATIONAL EFFICIENCY BY DISPOSING, TO THE FRONT OF THE BODY PORTION, THE SEEDLING HOLDERS THAT ARE ARRANGED TO BE THE TOPMOST AND MIDDLE LEVELS IN THEIR SECOND CONFIGURATION； AND HOUSING SEEDLING BOXES OR SEEDLING SHIFTING MEMBERS IN A CERTAIN LOCATION. SEEDLING HOLDERS (20U, 20M, 20D) FOR LOADING SEEDLINGS ARE PROVIDED, THROUGH A LINK MEMBER, TO A SUPPORT MEMBER (24) FIXED TO THE VEHICLE； THE LINK MEMBER IS ROTATED TO FREELY SWITCH THE SEEDLING HOLDERS BETWEEN FIRST AND SECOND CONFIGURATIONS, THE FIRST CONFIGURATION ARRANGING THE SEEDLING HOLDERS FRONT-REAR HORIZONTALLY, THE SECOND CONFIGURATION ARRANGING THE SEEDLING HOLDERS VERTICALLY； FRONT AND REAR EXTENSIONS ARE FORMED AT THE FRONT AND REAR OF THE SEEDLING HOLDERS； FRONT AND REAR STOPPERS ARE FORMED AT THE FRONT (38A1, 38B1, 38C1) AND REAR (38A2, 38B2, 38C2) EXTENSIONS, THE FRONT AND REAR STOPPERS BEING HIGHER THAN THE SEEDLING LOADING SURFACES OF THE SEEDLING HOLDERS； AND A REARWARD-SLOPING GUIDE SURFACE IS FORMED ON THE FRONT UPPER FACE OF THE FRONT STOPPER. FIG. 10
