A distributing machine (1) comprises the components of a product housing (2)； a material throwing air blower (19) which is accommodated in a casing (14), wherein the casing is connected with the housing (2) and comprises an opening (15) which makes the product of the housing (2) be transported to the air blower (19), the opening (15) comprises an upper side and a lower side (27,28) and a first surface side and a second surface side (29,30), the product which passes through the opening (15) is moved from the first side (29) to the second side (30) by the air blower (19), a plane (31) is horizontal and passes through the upper end (32) of the upper side (27), a plane (33) is vertical and is parallel with the rotation axis (24) of the air blower (19) and passes through one end (34) of the second side (30), which is horizontally farest from an axis (24)； and a mixing component (11) which moves the product of the housing (2) to the opening (15). According to the agricultural machine, one wall (36) of the housing (14) vertically extends from the plane (31) to the lower side (28) and horizontally extends from the plane (33) to the first surface side (29) until an edge (37) where the second side (30) is connected with the upper side (27). A shortest distance (d) between the projections of the axis (24) and an edge (37) in a plane (38) which is vertical to the axis (24) is smaller than or equal with 40% of the radius of the air blower (19).
