The invention discloses a lithium batteries' positive and negative plate processing system and a technology thereof, and belongs to the field of waste battery disposal. The system comprises a feeding platform, a conveyor, a pulverizer, an analytic engine, an induced draft fan, an aggregate device, a pulse purifier and a classifying screen and a sorting machine. The processing technology is composed of two parts, namely a positive plate processing technology and a negative plate processing technology. Positive and negative materials in lithium batteries are recovered and separated completely by physical processing methods such as mechanical knocking, crushing, separation and the like. In the whole technology, no chemical component is added, and no chemical processing technology is adopted. The technology is completely environment friendly. By the system, the complete operation of separation and recovery of the lithium batteries' positive and negative plate materials can be realized without cooperation of other equipment. The process is complete, simple and convenient.