An automatic watering device (100) for automatically watering, comprising a water storage pipe (10), a regulating valve (20) and a long nozzle cover (30) provided at the opening of the water storage pipe (10), and a water guide rope (40) penetrating through the side wall of the water storage pipe (10). The regulating valve (20) is in threaded connection to the water storage pipe (10)； the long nozzle cover (30) comprises a top cover (31) which is opened upwards and used for being in contact with an external water storage container and a long nozzle pipe (32) which is provided in the top cover (31) in a penetrating manner and communicated with the top cover (31), and the long nozzle pipe (32) penetrates through the regulating valve (20) and stretches into the bottom of the water storage pipe (10)； the water guide rope (40) is partially provided at the bottom of the water storage pipe (10), and partially extends out of the side wall of the water storage pipe (10)； water at the bottom of the water storage pipe (10) permeates out of the water storage pipe (10) by means of the water guide rope (40), and the water is guided into soil by means of the water guide rope (40) for automatic irrigation. The automatic watering device is small in size, the outflow speed of water can be accurately regulated, and the regulating method is simple and convenient.Un dispositif d'arrosage automatique (100) pour l'arrosage automatique, comprenant un tuyau de stockage d'eau (10), une vanne de régulation (20) et un couvercle de buse long (30) disposé au niveau de l'ouverture du tuyau de stockage d'eau (10), et un câble de guidage d'eau (40) pénétrant à travers la paroi latérale du tuyau de stockage d'eau (10). La vanne de régulation (20) est en liaison filetée avec le tuyau de stockage d'eau (10) ； le couvercle de buse long (30) comprend un couvercle supérieur (31) qui s'ouvre vers le haut et est utilisé pour être en contact avec un récipient de stockage d'eau externe et un long tuyau de bu
