The utility model relates to a thrust wheel for an agricultural medicine application machine, which belongs to the field of agricultural medicine application machines, and is characterized in that a wheel body is a cylinder with a central through hole; circular convex sides are arranged on the circumference of the left side and the right side of the wheel body so as to play a limiting role to a crawler; the left end section and the right end section of the central through hole of the wheel body are provided with bearing holes which share the same centerline with the central through hole so as to correspondingly install bearings; the middle parts of the left side surface and the right side surface of the wheel body are provided with circular concave surfaces; the middle section part on the periphery of the wheel body is provided with a rectangular circular groove for a raised block or a deflector rod on the inner surface of the crawler to pass through; the thrust wheel is installed on a thrush wheel shaft on the chassis of the agricultural medicine application machine through the bearings; and all thrust wheels are pressed on the crawler so as to ensure the normal running and operation of the agricultural medicine application machine as well as the medicine application and debugging of the agricultural medicine application machine in a paddy field.