The invention discloses an agricultural sprinkling and fertilizing integrated device. The device comprises a bottom plate, an n-shaped mounting frame, a fertilizer box, a motor, a stirring shaft, stirring rods, an inverted L-shaped rod, a funnel-type grinding disc, a circular fertilizer frame, a water tank, a sleeve, a connecting rod, a piston rod, a cylinder body, a piston, a rack, a rotating shaft, a gear and a nozzle. According to the agricultural sprinkling and fertilizing integrated device, through the arrangement of the motor, the stirring shaft, the inverted L-shaped rod and the funnel-type grinding disc, granular fertilizer can be fully ground and crushed, and the absorption of plants is facilitated; through the arrangement of the sleeve, the connecting rod, the piston rod, the piston, the cylinder body, the rack, the gear, the rotating shaft and the nozzle, continuous sprinkling and fertilizing can be conducted simultaneously, the working efficiency is improved, and the dissolution of the fertilizer and the absorption of the plants are facilitated; meanwhile, the nozzle is driven to rotate forward and backward by a certain angle through cooperation, the sprinkling range isenlarged, and sprinkling is more sufficient.