The object of the present invention is a sowing machine (1), such a device comprising at least a seed container (2) and a sowing unit (3). This sowing unit comprises a longitudinal seed box (4) guiding the seeds by means of a feed apparatus (5) connected thereto through seed tubes to a seed coulter (6), press wheels (7), and a pulling device (8) for coupling the sowing machine to a work machine. The invention is characterised in that the seed box (4) comprises two parallel seed compartments in the direction of its longitudinal axis, a sowing compartment (9) and a return compartment (10). These are connected to each other by means of transfer openings (13) at opposite ends of the pair of elongated compartments, whereby the transfer means (14) establishing a mechanical movement on the one hand guide the seeds to the feed apparatus (5) in connection with the sowing compartment (9) and on the other hand return the seeds that have bypassed the feed apparatus to the beginning of the sowing compartment through the return compartment (10), to establish a continuous circulation in the seed box (4).
