Characteristics of rodless tractors’ body and working flow were introduced, and the design idea of the overall vehicle was summarized. The principle of transmission technology in mobile auto carried technologies was analyzed. Three ways of wheel catching of the tractor were analyzed with comparison, and the principle and characteristics of reliable technologies as steering and braking were discussed. New technologies adopted in design of the rodless tractor in recent years were concluded. The conclusion is that new technologies can be integrated in design of the rodless tractor, which is the ideal way for tractor in the future.