The invention discloses an inter-integrated circuit (I2C) bus control system. The system comprises a bus host device and a bus slave device, wherein the bus host device is communicated with the bus slave device through an I2C bus; the I2C bus comprises a path of clock wire and multiple paths of parallel data wires; and the multiple paths of parallel data wires are used for transmitting data between the bus host device and the bus slave device in parallel. After the method is adopted, the system is compatible with I2C protocols, and under the same frequency, the processing capacity of the system can be increased exponentially.