Signal shielding detection method and system

The invention relates to a signal shielding detection method and a signal shielding detection system. The shielding system firstly receives a base station signal, generates and transmits a shielding signal according to the base station signal. The shielding signal can shield the base station signal from being received by the terminal equipment. A shielding system receives a time slot of a base station signal, and acquires a base station signal spectrum during the time slot of the shielding system for transmitting the shielding signal. The shielding (the depth of the intensity difference) effect performance of the shielding system on the base station signal can be known by utilizing the relationship between the two frequency spectrums. The time slot of the shielding system for receiving thebase station signal and the time slot of the shielding system for transmitting the shielding signal are the time slots of the same shielding period when the shielding system works. Therefore, the detection can be realized wh