Method and system for testing base station time delay

The invention discloses a method for testing base station time delay which comprises: a sending step, service data is sent to a tested base station through a Uu air interface; a calculation step, the sum of an uplink physical interweaving and a processing time delay inside the base station and/or the sum of an uplink transmission time delay and a sending time delay of an Iub interface is evaluated according to a combination operation of the time that the service data respectively reaches an FP module of the base station, the time that the data is sent in the Uu air interface and the time thatthe data is sent in the Iub interface. At the same time, the invention also converts the service data into downlink data through the loop-back unit by mounting a loop-back line on an upstream sendingend of the Iub interface, and evaluates the sum of the uplink transmission time delay, the downlink transmission time delay and the sending time delay of the Iub interface by calculating the time difference that the service da