A spraying assembly (10) and an agricultural plant protection unmanned aerial vehicle (100), wherein the spraying assembly (10) comprises: a spraying rod (1), a spraying head assembly (2), and a connecting base (3); the spraying head assembly (2) is connected to one end of the spraying rod (1); the connecting base (3) is connected to the other end of the spraying rod (1), and is used for fixing the spraying rod (1) onto a frame (101) of the agricultural plant protection unmanned aerial vehicle (100); the connecting base (3) is a flexible connecting base, such that the spraying rod (1) can swing with respect to the frame (101) under the action of an external force. Or a spraying assembly (10) and an agricultural plant protection unmanned aerial vehicle (100), wherein a spraying rod (1) of the spraying assembly (10) comprises a first rod body (111), a second rod body (112), and a flexible connecting part (113) for connecting the first rod body (111) and the second rod body (112); the second rod body (112) is connected to a spraying head assembly (2); the flexible connecting part (113) enables the second rod body (112) to swing, without being broken, with respect to the first rod body (111) under the action of an external force, such that the service life of the spraying assembly (10) is prolonged.L'invention concerne un ensemble de pulvérisation (10) et un véhicule aérien sans pilote de protection de plantes agricoles (100), l'ensemble de pulvérisation (10) comprenant : une tige de pulvérisation (1), un ensemble tête de pulvérisation (2), et une base de liaison (3) ; l'ensemble tête de pulvérisation (2) est relié à une extrémité de la tige de pulvérisation (1) ; la base de liaison (3) est reliée à l'autre extrémité de la tige de pulvérisation (1), et est utilisée pour fixer la tige de pulvérisation (1) sur un châssis (101) du véhicule aérien sans pilote de protection de plantes agricoles (100) ; la base de liaison (3) est une base de liaison souple, de sorte que la ti