As a key part of communication industry chain,the 5th generation mobilecommunication system(5G) testing technology makes it possible to simulate and test 5G network devices and evolving new standard technology. Flexible and diverse test technology can truly reflect the network status, providing a strong guarantee for enhancing the coverage of 5G network and improving the overall performance of the network.This paper first gives a brief overview of global 5G development status and an introduction to China’s test progress in 5G key technology verification, core network verification and access network verification. Then it particularly presents the over-the-air (OTA) testing technology of 5G NR (New radio) and its advantages for massive MIMO. Finally, the challenges and development trends of future 5G testing are forecasted.