A spraying rod self-balancing and damping apparatus and an agricultural drone spraying rod. The spraying rod self-balancing and damping apparatus (8) comprises a housing (1), a bracket (3), and nut-and-bolt components. An upper cover (6) is provided on top of the housing (1). A cavity is provided within the housing (1). Multiple steel balls (2) are provided in the cavity. The bracket (3) is provided on a sidewall of the housing (1). The bracket (3) is provided with an engaging groove fitting a spraying rod (7) and is provided with the nut-and-bolt components on the side away from the housing (1). The agricultural drone spraying rod comprises a unit frame (10), a spraying rod (7), and multiple spraying rod self-balancing and damping apparatus (8). The unit frame (10) is connected to an agricultural drone. The spraying rod (7) is pivotally connected as one with the unit frame (10) via a rotating shaft (9). The spraying rod self-balancing and damping apparatus (8) are symmetrically provided on the spraying rod (7). The bracket (3) is engaged on the spraying rod (7). The bolts (4) of the nut-and-bold components run through the nuts (5) and come in contact with the spraying rod (7). This effectively stabilizes hazardous movements of the spraying rod and reduces the swinging amplitude and swinging time of the spraying rod.La présente invention concerne un appareil d'auto-équilibrage et d'amortissement de tige de pulvérisation et une tige de pulvérisation de drone agricole. L'appareil d'auto-équilibrage et d'amortissement de tige de pulvérisation (8) comprend un boîtier (1), un support (3) et des composants boulon/écrou. Un couvercle supérieur (6) est placé au-dessus du boîtier (1). Une cavité est ménagée à l'intérieur du boîtier (1). De multiples billes d'acier (2) sont placées dans la cavité. Le support (3) est prévu sur une paroi latérale du boîtier (1). Le support (3) est doté d'une rainure de mise en prise ajustant une tige de pulvérisation (7) et est doté des composa
