Reading method, system and interconnecting device controller

The embodiment of the invention discloses a reading method, a reading system and an interconnecting device controller. The method comprises the steps of forming a first write transaction data package including a reading request instruction and memory address information; transmitting the first write transaction data package; receiving a second write transaction data package which comprises data corresponding to the memory address information; resolving the second write transaction data package to obtain data corresponding to the memory address information. According to the reading method provided by the invention, an affair initiator forms the first write transaction data package to replace and transmit the write transaction data package; furthermore, the first write transaction data package comprises a reading request instruction and memory address information, the receiver reads corresponding data according to the reading request instruction and the memory address information, and returns the second write transaction data package, therefore the affair initiator can obtain data to be read to realize read operation, and continuously initiate a read bus affair to improve the transmission efficiency.