Abstract: In order to improve the imbalance of lithium battery of pure electric agricultural vehicle and ensure that the voltage of all single batteries in the lithium battery pack is at the same level, it proposed a lithium battery balanced charging control system based on ARM microprocessor, which makes the charging of lithium battery pack more safe and reliable. The experimental results show that it has obvious effect and achieves the predicted charging effect for the balanced charging control system of lithium battery of pure electric agricultural vehicle based on ARM processor.