The present invention relates to a Liquid Crystal Display data processing method and apparatus. The data processing method comprises receiving a (n+1)th row of actual data, reading a buffered nth row of actual data, and performing an exclusive-or operation on the (n+1)th row of actual data and the nth row of actual data to generate a (n+1)th row of exclusive-or data and transmit it to a data driver. The data processing apparatus comprises a signal receiver, a data path, a first data receiver, a first data buffer memory, an exclusive-or processor and a data transmitter, wherein the exclusive-or processor is connected to the first data receiver and the first data buffer memory respectively, and is used to generate a current row of exclusive-or data by performing an exclusive-or operation. The present invention removes redundant data, effectively reduces data variation amount in data transmission between a sequential controller and the data driver, and reduces Electro-Magnetic Interference of the Liquid Crystal Display to the largest extent.