The invention discloses a crawler wheel group structure of a cultivator, wherein the cultivator has at least one power output shaft.The track wheel group comprises a driving wheel, a wheel frame, a first driven wheel group, a second driven wheel group and a track.The driving gear train is locked on the outer circumference of the power take-off shaft and driven by it.The wheel frame is attached to the outer circumference of the driving wheel, but does not move with it.The first and second driven wheel sets are respectively pivoted at the front and rear ends of the lower section of the wheel frame.The track surrounds the driving wheel, the first and the second driven wheel groups respectively, and is constrained by its driving and moving.With the composition of the upper components, the crawler can reduce the pressure per unit area, and has small requirements for the road surface. It can adapt to all terrain road conditions, and facilitate the movement and operation of the cultivator.本創作係揭露一種中耕機之履帶輪組結構；其中，該中耕機至少具有一動力輸出軸。而該履帶輪組包含一驅動輪、一輪架、一第一從動輪組、一第二從動輪組、及一履帶。該驅動輪係鎖固於該動力輸出軸外周緣並受其驅動。該輪架係套銜於該驅動輪外周緣，但不與其同動。該第一、二從動輪組，係分別樞設於該輪架下段前、後兩端。該履帶分別繞圍驅動輪、第一、二從動輪組，並受其驅動與行進約束。藉由上構件之組成，利用履帶可以減小單位面積壓力，對路面的要求小的特點，能適應全地形路況，方便中耕機之行進與作業。
