A device (100) for distributing material for an agricultural machine (10) comprising: a chamber (110) provided with an inlet (105) and an outlet (106) for the material to be distributed; pneumatic means for generating a depression in the chamber (130); a distributor element (120) housed in the chamber (110) and suitable to receive the material due to the depression and transfer it from the inlet (105) to the outlet (106) of the chamber (110); the pneumatic means comprise an aspirating conduit (130) and a Venturi tube (133) connected to the aspirating conduit (130) and suitable to connect the aspirating conduit (130) with an exhaust pipe (21) of an engine so as to create a depression in the chamber (110).
