The invention discloses a testing and maintaining system of the basic station and the method thereof, which is applied to the test and maintenance for the equipment of a base band unit or a far end radio frequency unit; wherein, an adaptive device is connected with the device to be tested and maintained through Ir interface, and is used to finish the testing and/or maintaining data sending and receiving during an operation terminal running testing and/or maintaining software on the devices to be tested and maintained through the Ir interface; the operation terminal is connected with the adaptive device and is used for running testing and/or maintaining software to test and maintain the devices to be tested and maintained through the adaptive device. The testing and maintaining system of the invention can be used as a data resource or data analysis device, and at the same time support the test for the base band unit or the far end radio frequency unit. While completing the testing function, the invention can also reduce cost and volume, and can also be used as a local maintenance tool for the far end radio frequency unit.