PROBLEM TO BE SOLVED: To further improve mounting workability of a seeding device, since in order to mount/dismount the seeding device, it is conventionally necessary to largely open an external frame piece, which is provided to a delivery base, toward right/left outside of the machine frame.SOLUTION: In a seeding device 1, a delivery part 14a of a seeding device 14 is detachably attached to a delivery base 13 provided to machine frames 2 and 3, and is meshed with a follower gear 75 at the delivery part 14a side of a driving gear 82 in the delivery base 13 so as to drive the delivery part 14a. In the delivery base 13, there are provided holding upper plates 83 and 83, holding lower plates 77c and 78c, a rear holding body 80, and an elastic guide mechanism 27 which elastically energizes a rear engagement section 14c toward the holding upper plates 83 and 83 and holding lower plates 77c and 78c, by insertion of the delivery part 14a into the delivery base 13 from the above so as to slide and guide the rear engagement section 14c to a rear holder 80.
