Abstract: Wireless network switch is generally used for base station environment. External interference signal affects itsnormal work through the signal line or shell. Based on the above situation, The paper analyses the test principle of RFconducted immunity in GR-1089-CORE . The problem is also discussed in the test. And a series of countermeasures are putforward to strengthen the conducted immunity capability of wireless network switch from the filter selection and circuit designtwo-pronged approach.