Abstract: Taking Fuzhou 5G communication base station as an example, three typical 5G base stations were measured on the spot.Different terminal space locations, application scenarios, transmission duration and section distance were chosen as variables to test the electromagnetic radiation level of the base station under a single terminal. The results showed that the electromagnetic radiation level during data transmission was high, but also far less than the electromagnetic environment control limit. By analyzing the test data, it was recommended that the test terminal should be placed at the back end of the horizontal connection between the BTS and the frequency selection test instrument during the measurement. The application scenario selected data transmission and the stable connection between the test terminal and the BTS for 6 minutes during the monitoring.