An experimental study on characteristics of driving force and transmission efficiency of electric tractor was carried out. Based on the theoretical analysis about characteristics of driving force and transmission efficiency of electric tractor, the generation equation of driving force, the calculation equation of transmission efficiency and motor controller efficiency were built up considering the whole tractor. The experimental study was carried out by using the method of indoor simulation experiment. The experimental results showed that the characteristic curves of driving force are down concave, and are more suitable for dynamic performance of the tractor; the characteristic curve of driving force of different shifts is suitable for different working conditions; the transmission efficiency of electric tractor have greater difference when the electric tractor working on different shifts, and the electric tractor has the best economy when it is working on the Ⅵ shift because the wide range of efficient velocity; the motor controller has little effect on transmission efficiency of electric tractor for its high efficiency. 