PROBLEM TO BE SOLVED: To obtain a transplanter which prevents entanglement of foreign materials to a planter shaft or a rotating arm without requiring a high fitting accuracy by making a dynamic power taking out mechanism to a working device and fitted as an option be a specific construction. SOLUTION: This transplanter has a dynamic power taking out mechanism to a working device located as an option in a rear of a planter case 11 in which a planter shaft 12 outputting a dynamic power to a transplanting tool is axially supported. The dynamic power taking out mechanism is constructed by axially supporting a supporting shaft to an output case 17 fitted in a rear end of the planter case 11 in rotatably to a shaft rotating direction and fixing every base end parts of an input arm receiving a dynamic power from a planter shaft 12 in inserting to a rear end of the planter case 11 and an output arm 21 interlocked to a working device side to the supporting shaft. Preferably, the input arm is a cam arm 20 attaching to a cam provided at the planter shaft 12.