To provide a fertilizer/agrochemical sprayer capable of automatically spraying a fertilizer or an agrochemical in the forward right and left direction.

A fertilizer/agrochemical sprayer comprises a hopper holding a fertilizer or an agrochemical, a blower having a discharge port and ejecting through the discharge port the fertilizer or the agrochemical, flowed from the hopper, in a state mixed with air, and a spraying pipe guiding the ejected fertilizer or agrochemical and spraying outside through the discharge port of the blower. Further, the fertilizer/agrochemical sprayer has a frame supporting the blower and a rotating means for reciprocating and rotating the spraying pipe against the frame so as to continuously change the spraying direction of the fertilizer or the agrochemical sprayed through the spraying pipe.