The present invention provides an operation machine for paddy field, which seldom causes scattering when point-shaped seedling is performed. The operation device for the paddy field is connected with a back end of a driving machine body. The operation device for paddy field can freely lift through a connecting rod mechanism (L), and can freely swing around a swinging shaft core (X). The operation machine for the paddy field performs point-shaped seedling that the rice seeds in a seed bucket (32) directly drop to the field through driving a feeding-out roller (33) around a roller shaft core (Y) in a transverse gesture. A height grade of the roller shaft core (Y) is set to a height grade which is approximately same with that of the swinging shaft core (X).
