The invention belongs to the technical field of agricultural equipment and discloses a low-cost harvester. The harvester comprises a suction device (7) and a fixed plate (4), wherein a dust collector (8) is arranged on one side of the suction device (7), a suction pipe (11) is arranged on one side of the dust collector (8) and fixedly connected with the dust collector (8), a suction front end (12) is arranged on one side of the suction pipe (11) and fixedly connected with the suction pipe (11), a suction wheel (13) is slidably connected on one side of the suction front end (12), an impurity bag (9) is fixedly connected on one side of the dust collector (8), a grain outlet pipe (16) is arranged on the dust collector (8), an agricultural product collecting box (14) is arranged on the fixed plate (4), a push-and-pull handle (1) is fixedly connected on one side of the fixed plate (4), a sliding rod (5) and a sliding wheel (6) which is arranged on one side of the sliding rod (5) are arranged on one side of the fixed plate (4). According to this small grain collecting machine, agricultural products can be sucked conveniently and automatically through the dust collector on the suction device so that manual collection is not required and time and labor are saved, and the direction of the suction front end can be adjusted conveniently in the collecting process through the suction wheel at the suction front end so that the suction front end can be adjusted to a better angle to harvest the agricultural products more efficiently. Fig. 1
